Duke's BPI game score in its six-point loss against Arizona (ranked No. 4 in BPI) was higher than two of its wins (vs East Carolina, vs Vermont). Other than its wins over No. 40 Michigan and No. 63 Alabama, Duke doesn't have any other wins over teams ranked in the top 180.
Duke has the best adjusted offensive efficiency according to KenPom.com, but its adjusted defensive efficiency ranks 101st.
Is Wisconsin the best team in college basketball?
The Wisconsin Badgers rank No. 1 in BPI after starting 12-0 with five wins over top-50 BPI teams -- St. John's, Florida, Saint Louis, West Virginia and Virginia. Their five wins against top-50 teams are the most by any team. Kansas and Davidson are the only other teams that have even faced five top-50 teams.
Wisconsin has the 11th-most difficult schedule according to BPI. Seven of their 12 wins are against top-100 opponents and none of them are against teams outside the top 175.
The Badgers have been successful playing a slow pace (17th-fewest possessions per game). Two of their three worst BPI game scores this season have come in the two games in which they played at the fastest pace (at Green Bay, vs North Dakota).
Michigan State barely cracks the top 25
The Michigan State Spartans, previously ranked No. 1 in the AP Poll, come in at No. 24 in BPI. The Spartans only have one loss, but it was by far their worst BPI game score and it came against their second-best opponent (No. 23 North Carolina).
Why else is Michigan State's BPI lacking? The Spartans have five wins against teams ranked outside the BPI top 100. Three of those wins are by 15 points or fewer, including two by single digits, and one of the five wins is against No. 338 McNeese State. Also, they haven't played a single true road game yet.
Welcome to the top 10, Saint Mary's
The undefeated Saint Mary's Gaels are ranked No. 8 in BPI, and it's not due to any wins over top-notch opponents. The Gaels haven't faced a single top-50 team yet, but five of their eight wins came against top-100 opponents and six of their eight wins are by double digits.
Saint Mary's has performed well against top-100 teams, posting a BPI game score higher than 95 in four of those five wins.
Why isn't Pittsburgh ranked yet?
The Pittsburgh Panthers are ranked No. 9 in BPI but aren't in the top 25 in the AP Poll. The Panthers are 10-0 with each of those 10 wins coming by at least nine points and nine of the wins coming by at least 17 points.
Pitt doesn't have any top-50 wins, but the Panthers do have two wins against teams just outside the top 50 (No. 51 Penn State, No. 55 Stanford). Their three best BPI game scores came against their three best opponents -- Penn State, Stanford and Texas Tech (No. 110).
Pitt is one of seven teams ranked in the top 20 in both adjusted offensive efficiency and adjusted defensive efficiency according to KenPom.com, along with Louisville, Oklahoma State, Arizona, Wisconsin, Kansas and North Carolina.