Brass Balls Index: A measure of how much a bracket favors underdog teams. The index is normalized from 0 (all high seeds chosen) to 100 (all upsets chosen).Since the tournament expanded to 64 teams in 1985, the highest BBI on record is 21.4 in 2014. The lowest was 4.1 in 2007. The average is 14.5.
Cinderella Potential: A measurement of a team's potential to go farther in the tournament than its seed would indicate - otherwise known as a 'cinderella' team. The index is a function of seed placement, sweet 16 probability, and the team's trend over the last four games.
Defensive Efficiency
Points allowed per 100 possessions. Lower is better.
Efficiency Delta
Defensive efficiency subtracted from Offensive efficiency. Large deltas indicate better offense AND defense. The difference between this metric and predicted win percentage is that the efficiency delta does not consider team efficiency.
Effective Field Goal Percentage. An adjustment to field goal percentage that accounts for the fact that a three point shot is worth 50% more than a two point shot. eFG% = (FGM + (0.5 x 3PTM)) / FGA
Free Throw Rate: Free throws taken per field goals attempt.
Implied Point Spread
The Log5 method outputs a team's probability of winning. This is converted to a point spread using a historical analysis over the last 20 years comparing how often the home team wins for a given point spread. A third-order equation was fit to this curve to generate a point spread given a win probability. The danger here is that the method lacks any consideration for pace.
Offensive Rebound percentage: Percentage of a team's missed shots that result in an offensive rebound.
Offensive Efficiency
Points scored per 100 possessions. Higher is better.
Average number of possessions per game.
The number of correctly picked winners.
Poss Pts
Possible Points: The number of possible points a bracket can earn.
Predicted win %
The normal cumulative distribution of Efficiency Delta divided by the team's point spread standard deviation (consistency). This one term takes into consideration a team's offense, defense, and consistency.
Prob Pts
Probable Points: The number of points that the bracket will probably earn, based on each team's probability of advancing.
Point Spread Standard Deviation: A measure of team consistency that uses raw efficency variance and covariance. Lower means more consistent. For more information, see Dean Oliver's 2004 book, 'Basketball on Paper', Chapter 11.
Root For (PPS)
Root For (Potential Point Swing): This column on the league page lists the team that has the most potential to positively implact a bracket's league ranking. The potential point swing is how many points the bracket stands to gain against the rest of the league if that team continues to win.
Seed Bonus
An optional scoring system that takes the product of the winning team's seed and the round the game was played and adds it to the baseline score for a win in that round. For example, if a #12 seed wins in the second round, the bonus is worth (2x12) = 24 points. This total would be added to the normal points earned for a win in that round. In the default scoring system, a second round win is worth 3 points. So that #12 seed win in the second round would be worth a total of 27 points. The multiplier is in effect for all teams, regardless of seed or whether the victory was actually an upset. So that #12 seed win is worth 24 bonus points whether they beat the #4 seed or the #13 seed.
Turnover percentage: Percentage of possessions that result in a turnover.