Fouls

There are 3 metrics that indicate how fouls factor into an individual’s effectiveness:

  1. Free Throw Rate (FTRate)
  2. Fouls committed per 40 minutes played (FC/40)
  3. Fouls drawn per 40 minutes played (FD/40)

Free Throw Rate (FTRate)

Free throw rate measures a player’s ability to get to the foul line relative to how often he attempts to score. It takes a players free throw attempts and divides those attempts by the player’s total field goal attempts.

FTRate = 100 * FTA / FGA

For example, Steffon Mitchell of Boston College had a free throw rate was 147.9 in the 2018-2019 season. This ranked 1st amongst all Division-I players.

Mitchell attempted 108 free throws and 73 field goals.

FTRate = 100 * 108 / 73 = 147.9

Fouls committed per 40 minutes played FC/40

This is a straight-forward stat that shows the amount of fouls a player commits per 40 minutes played.

FC/40 = (Fouls committed / MP) * 40

For example, Kyle Guy of Virginia committed 1.16 fouls per 40 minutes in 2018-2019. This was 5th in the country.

Snider committed 39 fouls playing in 1345 minutes over the season.

FC/40 = (39 / 1345) * 40 = 1.16

Fouls drawn per 40 minutes played (FD/40)

This is a stat developed by KenPom and explained more on this page. It makes several assumptions from Division-I averages, KenPom details below:

  • each shooting foul results in an average of 1.8 free throws
  • 16.3% of all fouls are committed by the offense
  • no offensive foul results in a shot (this is not entirely true since some offensive fouls occur in rebounding situations)
  • players on defense draw fouls at equal rates
  • players on offense draw non-shooting fouls proportional to their percentage of possessions used

Applying all of these assumptions can give a fair estimate of a player’s fouls drawn.

For example, Deishuan Booker of Long Beach State drew 7.6 fouls per 40 minutes played in 2018-2019. This ranked 1st in the nation.

Booker played in 1060 minutes in the 2018-2019 season drawing about 200 fouls.

FD/40 = (200 / 987) * 40 = 7.6