This is the second part of a review of home court trends in the ACC. In Part I that published yesterday, we looked at overall home court winning percentage in ACC conference games over the last 15 years. Today we will look at the outcomes when ACC teams play each other twice in the regular season. In the days before major conference expansion, every league team played the others twice each year, a convention that ended when the ACC reached 11 members in 2005. The conference has since played an unbalanced schedule that features several home-and-home scenarios but mostly consists of one-time match-ups.
As the above graph shows, we reviewed 312 double-meetings between ACC teams over the last 10 years. We broke the data into four discernible outcomes — sweeps by better and worse teams (as determined by KenPom‘s final rankings), and splits where home or away teams won both games. The data shows that there were 188 sweeps and 124 splits over the 10-year sample. The better team won both games 53.5 percent of the time; teams splitting games by defending their home floors occurred 32.7 percent of the time; while sweeps from the worse team and splits with the road teams winning made up the remaining 21.8 percent — on average, about twice per season.