Analysis: Do New Year’s Day Rankings Predict NCAA Tournament Destiny?

Posted by William Ezekowitz on January 3rd, 2019

The turn of the calendar is a significant milestone for many college basketball fans. With the new year comes conference play, and, on the horizon, the NCAA Tournament. The games start to matter a little more. But can we use what happened before the turn of the calendar to predict the NCAA Tournament? Taking data from the past five years, I looked at New Year’s Day KenPom ratings to answer a few important questions. What I found may surprise you.

For reference, here were the New Year’s Day rankings for the top 60 in KenPom:

Now, for the questions:

Given where my team was on New Year’s Day, how likely is it to make the NCAA Tournament?

  • #1-#20 – 99% likelihood. Breathe easy, KenPom top 20 fans! 2015 Florida missed the NCAA Tournament by struggling to an 8-10 record in the SEC after ranking 20th at the turn of the calendar. Every other team got at least a play-in game! 
  • #21 – #40 – 73% likelihood. This group has work left to do, and could very easily find itself on the outside looking in if conference play doesn’t work out. 
  • #40 – #60 – 41% likelihood. This is the true Bubble. Mid-major upstarts should still plan on winning their conferences, and power conference teams have considerable work still to do.
  • #60+ 8% likelihood of an at-large bid. 2016 Temple, a true hero, found its way to a #10 seed despite languishing at 131st at the turn of the New Year. Those Owls notwithstanding, teams below #60 in the ratings may need a minor miracle to get in without winning their conference. 

Given where my team was on New Year’s Day, can it get a good seed?

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Analytics vs. Experts: Teams to Watch The Projections Disagree About

Posted by Will Ezekowitz on November 13th, 2018

As the college basketball season gets under way, everyone wants to get a read on their favorite teams. Does their on-court product match the preseason hype? For some teams, it depends on which preseason hype you considered. College basketball fans can seek either scouting/film-driven projections or analytics/model-driven projections. These two approaches usually tend toward some overlap, but not in every case. I have documented some of the bigger disagreements among top 50 teams below, and it will be interesting to watch which interpretation is borne out during the regular season.

NOTE: For the purposes of this article “Analytics” are mainly KenPom, BartTorvik, John Gasaway and some HoopLens and HoopMath thrown in. The “Experts” will be: the Top 25 polls, preseason conference polls, Matt Norlander’s #1-#353 rankings, and preview articles from NBCSports, ESPN, The Athletic and others, although many of those ranking systems also consider analytics as part of their methodologies.

Group 1: Loved by the Analytics, Hated by the Experts

Miami— KenPom: #20. AP Top 25: #33 (according to “Others Receiving Votes” section)

Jim Larranaga Wonders Why the Polls Don’t Like His Team (USA Today Images)

  • Summary—lots of talent leaving, but hyper-efficient role players taking their place.
  • What the experts say: Bruce Brown and Lonnie Walker are playing in the NBA, Ja’Quan Newton is also gone, and there are no impact newcomers other than graduate transfer Zach Johnson. This one seems simple — a #6 seed lost its three most talented players, so the Hurricanes will take a step back.
  • What the analytics say: Brown, Walker and Newton were all talented, but none of them were that successful last year. To replace them, Jim Larranaga has productive big man Dewan Hernandez (formerly Dewan Heull), a sophomore jump expected from Chris Lykes, and a bunch of efficient role players led by three-point gunner Dejan Vasiljevic. And if you think 20th from KenPom seems aggressive, BartTorvik currently lists the Hurricanes at #8!

CreightonKenPom: #35. AP Top 25: No votes received (52nd or higher)

  • Summary—Four starters are gone, but Martin Krampejl and Greg McDermott are still around.
  • What the experts say: Marcus Foster and Khyri Thomas are now playing professionally in addition to the losses of contributors Toby Hegner and Ronnie Harrell. Some feisty freshmen return, as does big man Krampejl from an ACL tear. However, as Matt Norlander notes while ranking the Bluejays 71st in his rankings, the fact that he’s their best player “slots Creighton as having the least impressive best player of any team in the Big East.” It’s rebuilding time in Omaha.
  • What the analytics say: Norlander should show some respect for Krampelj’s name! Per HoopLens, the Bluejays were an astonishing 0.15 points per possession better defensively when he was playing last year, which is the difference between the fourth- and 180th-best defenses in the country. On the other side of the ball, McDermott has guided his offense into the top 60 nationally every season since 2012. Put the two together, and Creighton would appear poised to make the NCAA Tournament for a third straight year.

Penn StateKenPom: #35. AP Top 25: No votes received (52nd or higher)

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Analyzing Five Breakout Players Nationally

Posted by Will Ezekowitz on October 31st, 2018

Will Ezekowitz (@wezekowitz) is a national columnist focusing on the numbers behind college basketball.

I have tried to project next year’s breakout players for several years now. Doing so is largely subjective and also generally requires team success, but I’m trying to answer the following question: “Which players are not getting the headlines now but who will be in February and March?” Last year, I gave you Markus Howard, Keenan Evans (bonus points) and, regrettably, Justin Jackson (negative points), among several others. This year, I have refined my approach by using the Projected Contributors tool at BartTorvik, aka free KenPom. Torvik’s site projects points, rebounds and assists for every player in college basketball, and I have included those projected totals below.

Ty Jerome is Poised for an Outstanding Season (USA Today Images)

  • Ty Jerome – Virginia. 12.2 PPG, 3.4 RPG. 4.8 APG. Tony Bennett has the defense, Kyle Guy has the man-bun, and DeAndre Hunter has the lottery pick talent. But do not forget about Ty Jerome among these Cavaliers. After minimal playing time as a freshman, he showed flashes of downright dominance in his sophomore tilt even while often deferring to Guy. He’s a 41 percent shooter from deep, a capable creator and logged a better assist to turnover rate last season than even the great London Perrantes did during his senior year. His 6’5” frame at the point of attack is also a necessary key to Virginia’s incredible defense, and he ended last year with the highest steal rate in the ACC (3.6%). He should take on even more responsibility this year, and if he continues on his current trajectory, he can become the best point guard in a loaded ACC (and one of the best nationally as well).
  • Sagaba Konate – West Virginia. 14.4 PPG, 8.0 RPG, 1.2 APG. Disclaimer: I am the official conductor of the Sagaba Konate Hype Train. Konate is an absolutely chiseled physical specimen who is the toughest dude on which any basketball court he steps. Quite simply, he’s the best rim protector in the country, but he’s also an elite rebounder. Last year he became the third major conference player in the last 15 years to log a block rate above 15 percent and a defensive rebounding rate above 20 percent (Kansas’ Jeff Withey and Mississippi State’s Jarvis Vernardo were the others). A big man usually must choose to either challenge a shot or corral it if it misses — Konate, somehow, is elite at both. On the offensive end, he improved from simply a putback artist who shot 56 percent at the line his freshman year into a legitimate post player who nailed 88 percent from the line in Big 12 play last year (second-best). After surprising scouts at last spring’s NBA Combine, Konate knows he needs a more refined offensive game to become a first round pick. Bet on him developing it and turning in an All-America season in Morgantown.

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Untrustworthy: Caveat Emptor on These 10 Teams

Posted by Will Ezekowitz on March 14th, 2018

Preseason rankings — they are, in most sports, completely irrelevant when the postseason rolls around. But not in college basketball. When projecting Final Four teams, as we have covered in this space before, the preseason AP Poll is just as predictive as the current AP poll. The rationale for this is that preseason rankings account for things that the mathematical models struggle with (for example, coaching changes, big recruiting classes, injuries and suspensions, etc.), making them a surprisingly accurate projection system. So what about the handful of teams each year that are excluded from these rankings but go on to do great things in the regular season? Is it safe to assume that if you can’t crack the preseason Top 25, you won’t cut down any nets in March?

Can Virginia Break the Trend? (USA Today Images)

To answer this question, I looked at historical NCAA Tournament teams that were unranked in the preseason but were ranked in the final regular season poll (this one) to examine whether they came crashing down to earth when it mattered most. My findings indicate that these teams have in fact underperformed as a group in the NCAA Tournament. Since 2007, 106 teams fit the criteria. Just 37 of that group (35%) exceeded their seeds’ average win expectation (based on average wins for each seed since 2002), and the group as a whole won just 120 games. That mark is 30 below an expected aggregate total of 150 victories, a statistically significant difference at the five percent level. Furthermore, just one of 51 top-four seeds ultimately made the Final Four (Kemba Walker’s 2011 Connecticut squad), although they have collectively produced 11 Elite Eight appearances with Florida‘s run last year being the most recent example. The conclusion here is that, although a handful of teams in this group may turn out to exceed expectations, it is likely as a whole to underperform.

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Projecting the 2018 NCAA Tournament Field With 2017 Data

Posted by Will Ezekowitz on January 2nd, 2018

The year 2017 is in the books and we are just beginning the conference season. With so much of a team’s “NCAA Tournament resume” still to be built, it seems like a fool’s errand to compare their relative achievements so far. All we know right now is a somewhat decent idea of which teams are actually good, but can we use resumes to date to project the future? I endeavored to figure just this out, by examining KenPom rankings at New Year’s Day with them to eventual NCAA Tournament seeding for the past five years. My conclusion indicates that, while surprises can certainly happen in the Tournament itself, teams are unlikely to significantly alter their regular season fortunes after the turn of the new year.

KenPom Rankings on New Year’s Day

 

For reference, here are the archived KenPom rankings as we head into 2018. They have been grouped into 20-team cohorts for convenience, and the group was limited to 60 teams because most teams ranked outsidethat range are mid-majors which will need to win their conference tournaments. The focus here will be on teams capable of building solid at-large resumes. Let’s start at the top.

Teams Ranked #1-#20 — 97% make the NCAA Tournament

This year: Villanova, Michigan State, Purdue, Duke, Virginia, Kansas, Texas Tech, Cincinnati, Gonzaga, West Virginia, Texas A&M, North Carolina, Wichita State, Arizona, Oklahoma, Xavier, Kentucky, Miami, Arizona State, Tennessee.

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The Models vs. the People: Who Is Right So Far?

Posted by William Ezekowitz on November 21st, 2017

With the rise of KenPom’s preseason rankings and the ratings of other models like it (SI and T-Rank, for example), projection models have become increasingly important in college basketball. But there is still a long way to go before these metrics-based systems replace the good old-fashioned eye test as represented in the national polls. The two varieties of projection mechanisms, both valid in their own right, disagreed about a few teams coming into this year. In this article, we will evaluate the differences on a few relevant teams to determine if we can settle on which method has been accurate so far. We’ll start by analyzing a couple of squads from the Big Ten before considering a couple others.

Minnesota. AP Rank: #15; KenPom Rank: #36

Jordan Murphy has helped Minnesota live up to expectations in the early season (Getty)

  • What the people thought: Minnesota spent the offseason as one of the most hyped teams in college basketball, as Nate Mason received plenty of all-Big Ten buzz and Amir Coffey appeared ready to make a huge leap. Richard Pitino’s Gophers were also expected to play their particular brand of stifling defense, bolstered by possibly the best shot blocker in college basketball, Reggie Lynch. There was a lot to like.
  • What the models saw: Neither Mason nor Coffey were especially efficient for the nation’s 77th-best offense, which meant this year’s outfit was set to improve on that end. The defense, while stifling, was below average in both turnovers forced and defensive rebounding, limiting its potential to become a top-10 unit.
  • Who has been right so far: The people. Jordan Murphy has been unexpectedly dominant through four games, putting up 23 points and 14 rebounds, for example, in a very impressive 12-point victory at Providence. The Gophers are humming along at 18th nationally in offensive efficiency, and if they can stay in that range they will certainly live up to their poll projection as the 15th-best team in the country.

Michigan State. AP Rank #2. KenPom Rank: #10

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Projecting This Season’s Breakout Players

Posted by Will Ezekowitz on November 14th, 2017

After spending the preseason hyping certain guys, some players we don’t expect to steal the spotlight does just that. If history tells us anything, there are a number of players who are flying under the radar right now that will be commanding headlines in February. It is my humble task to give those players some of the love they will eventually deserve right now, before the rest of the nation catches on. I’ll give myself credit for projecting the rises of Purdue’s Caleb Swanigan and Oklahoma State’s Jawun Evans last year, but I’ve been honing my craft this offseason and hope to do even better this time around. So let’s get started. Here are five breakout players in college basketball this season.

  • Nick Ward, Sophomore, Michigan State — Nick Ward averaged 8.8 fouls drawn per game last season, becoming the first major conference player to average more than 8.0 since Kentucky’s DeMarcus Cousins in 2010. He also owned the second highest offensive rebounding rate in the country at 17.5 percent. Sure, he fouls a bit too much and turns the ball over more than head coach Tom Izzo would like, but post players this dominant are very hard to come by. If Ward can play closer to 30 minutes per game this season — which would itself be a feat considering the talent of the Spartans frontcourt — watch out. His tools suggest he could become a First Team All-American. Sophomore forward Miles Bridges gets all the hype, but if the Spartans reach their potential this year, Ward will be a big reason why they did so.

Nick Ward is on his way to possible stardom. (Kevin Jairaj/USA TODAY Sports)

  • Markus Howard, Sophomore, Marquette — America, are you ready to fall in love with a small point guard who puts up ridiculous numbers? Well, the 5’11” Howard is your man. He shot 54.7 percent — FIFTY-FOUR POINT SEVEN PER CENT!!! — from three-point range last year, on almost five shots per game in the Big East! That’s a mind-numbingly good shooting season. More importantly, with Marquette having graduated some ball-dominant seniors, Howard and fellow diminutive scorer Andrew Rowsey will get the keys to Steve Wojciechowski’s uptempo offense. Marquette started the senior Rowsey in the season opener, but I’m betting on Howard and his ridiculous shooting and efficiency forcing his way into the starting lineup in due time. A season scoring average of 20 points per game is not out of the question for the sophomore.

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Settle In With 68 NCAA Tournament Facts

Posted by Will Ezekowitz on March 16th, 2017

March is complicated. What follows is an attempt to make some sense of the madness and to give you solid statistical grounding in order to justify your decisions. That way, when your bracket is ruined, it will be because of bad luck rather than bad process. Here are 68 important statistical facts about the NCAA Tournament, mostly based around potential match-ups. Data has been gathered from kenpom.com, hooplens, hoop-math and ESPN.com.

The First Four Whetted Our Appetite — Now It’s Time to Get Serious (USA Today Images)

  1. Even though Maryland is the #6 seed against Xavier, the Musketeers have a better KenPom ranking and are favored to win the game.
  2. However, since point guard Edmond Sumner was injured 10 games ago, Xavier has been giving up more threes at a higher percentage. With a 3PA/FGA of 40.8, compared to the Division I average of 36.4, Maryland is heavily reliant on the three-ball.
  3. Baylor’s opponents have an assist rate of 58.2 percent, second highest in the field. SMU’s assist rate of 62.5 percent ranks sixth in the field and 10th nationally.
  4. Creighton attempts a larger proportion (34.2%) of its initial field goals in transition than any other team in the field. The Bluejays’ opponent, Rhode Island, allows opponents to shoot just 20.1 percent of their attempts in transition, the fourth lowest mark in the field.
  5. Rhode Island also allows opponents to earn just 21.3 percent of their points from three-pointers. The Bluejays tend to rely on the three, getting 32.0 percent of their points from beyond the arc.
  6. Saint Mary’s is ranked 14th on KenPom and VCU is ranked 50th, resulting in the site giving the Gaels a 71 percent chance of winning their game.
  7. West Virginia relies on forcing turnovers, but possible Second Round opponent Notre Dame has the lowest turnover rate in the country and Princeton has the 11th-lowest.
  8. Kansas and Iowa State played each other twice this season. Each team won once on the other’s home floor, and the combined score of the two games was 165-164 in favor of the Jayhawks.
  9. But Nevada could be a good match-up with Iowa State, as the Wolfpack are an above average rebounding team, while the Cyclones — with only one regular standing above 6’5” — are below average in both categories.
  10. Seton Hall’s Angel Delgado averages 4.9 offensive rebounds per game, leading the nation. Arkansas ranks 326th nationally in defensive rebounding rate.
  11. Led by Reggie Lynch, Minnesota has a block rate of 16.2 percent, third-best nationally. Middle Tennessee, though, ranks fifth in the country in avoiding blocks, at 5.8 percent. Read the rest of this entry »
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Beware the Polls: Overperforming Teams Regress in NCAA Tournament

Posted by Will Ezekowitz on March 14th, 2017

Preseason rankings may seem irrelevant when it comes to college basketball, but history has shown that their predictive value are surprisingly important. For example, as we have shown in this space before, the preseason poll is in fact just as predictive of a run to the Final Four as the current AP Poll. The reasoning behind this phenomenon is that the preseason polls take into account all of the changes that the mathematical models have more difficulty accounting for (i.e. coaching changes, big recruiting classes, injuries, etc.). The conventional wisdom entering the season is actually fairly sophisticated and smart.

Are You Sure You Want to Choose Michigan? (AP)

Given this intuition, let’s examine the teams that defied that wisdom throughout the season and went from unranked in the preseason to ranked in the final AP poll before the NCAA Tournament. Had the preseason polls gotten something wrong? Or did these over-performing teams regress back to their expectations in the postseason? Using the last 10 years of data that includes seed win expectation data from fivethirtyeight.com, I investigated. Of the 97 teams who qualified for analysis, 32 (33%) of those teams outperformed their win expectations in the NCAA Tournament while 65 (67%) underperformed. As a whole, a group that was expected to win 138.8 games over the 10-year sample won just 107. A statistical T-test found this difference statistically significant. In fact, only one team — Kemba Walker’s 2011 National Championship team, Connecticut — even made the Final Four.

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Overrated/Underrated: Six Teams to Watch Down the Stretch

Posted by Will Ezekowitz on February 3rd, 2017

Now halfway through the conference season, things are beginning to take shape around the college basketball landscape. As we advance into February, there are a number of overrated and underrated teams in the national polls. This week let’s dive into who some of those teams are and what makes them that way.

Overrated

Baylor Played Kansas Tough But Found an All Too Familiar Result (USA Today Images)

  • Baylor, 20-2 (7-2), #2. The Bears earned some #1 votes in the most recent AP Top 25 for a reason — this is a very good team. But can Baylor keep it up for the next five weeks in the rugged Big 12? Wednesday night’s loss to Kansas in Allen Fieldhouse was perhaps expected, but what about upcoming road tests at Iowa State, Oklahoma State and Texas Tech and a home date with West Virginia? Lastly, there’s that pesky issue that Baylor wasn’t ranked in the preseason, which matters more than you’d think. Since 2006, only one team that was unranked in the preseason and ranked in the pre-tournament poll has made the Final Four. That was Shabazz Napier’s 2014 National Championship Connecticut team. These Bears feel more like last year’s Iowa club or the 2014 Syracuse team, though.
  • USC, 19-4 (6-4), NR. After a home upset of UCLA, the Trojans climbed up to a #8 seed in Joe Lunardi’s bracketology and sat just outside the Top 25 in this week’s poll (28th). But KenPom only rates the Trojans as the 59th-best team in college basketball and that’s probably closer to reality. USC is an athletically gifted team that maximizes offensive possessions by grabbing rebounds and avoiding turnovers, but its offense isn’t very efficient (52nd nationally) and its defense generally doesn’t pick up the slack (73rd nationally). Moreover, the bottom quarter of the Pac-12 is exceptionally weak this year, inflating win totals and otherwise artificially boosting all the numbers. The Trojans played well in the non-conference with good wins over SMU and Texas A&M, but if they can’t meaningfully separate themselves from the rest of the league over the last five weeks, they may be staring a bubble disaster right in the face on Selection Sunday.

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