A team's defense can be evaluated using the same 7 stats:
A team's defensive 3-point field goal percentage is its opponents' made 3-point shots divided by its opponents' attempted 3-point shots.
3P% = Opp. 3PM / Opp. 3PA * 100
Vanderbilt's defensive 3P% was 29.4% in 2015-2016, good for 3rd amongst all Division-I teams.
Its opponents made 183 3-point shots in 622 attempts.
3P% = 183 / 622 * 100 = 29.42%
For a comparison, Boston College opponents made 38.2% of their 3-point shots. That's 328th in the country.
A team's defensive 2-point field goal percentage is calculated by taking its opponents' 2-point makes and dividing them by its opponents' 2-point attempts.
2P% = Opp. 2PM / Opp. 2PA * 100
The 2015-2016 Cincinnati Bearcats led the nation limiting opponents' 2P% to 41.3%.
Bearcats opponents made 510 of 1235 2-point shot attempts.
2P% = 510 / 1235 * 100 = 41.3
For some contrast, Charlotte's opponents made 52.7% of its 2-point shots. That clip was 319th amongst all Division-I teams.
While 3P% is not indicative of a team's 3-point defense, 2P% can be attributed some to how a team protects the rim and defends overall.
A team's defensive free throw percentage is its opponents' free throw makes divided by its opponents free throw attempts.
FT% = FTM / FTA * 100
Texas A&M opponents made 65.8% of its free throws in 2015-2016. This percentage put the Aggies at 9th in the country.
FT% = 451 / 685 * 100 = 65.84
And in comparison, Tulsa opponents made 75% of their free throw attempts. This was rated 346th out of all teams in 2015-2016.
Obviously you can't defend free throws. It's an uncontested shot. But if you can limit a team from attempting free throws, it could be a big factor. Can't make them if you don't take them.
Defensive Block percentage is a team's total blocked shots divided by its opponents' 2-point field goal attempts.
Blk% = Blocked shots / Opp. 2PA * 100
Cincinnati ranked 2nd in the country blocking 15.5% of its opponents' 2-point shot attempts.
The Bearcats blocked 192 of its opponents' 1235 shot attempts.
Blk = 192 / 1235 * 100 = 15.55%
This make sense, as Cincinnati limited its opponents to shoot 41.3% for inside the 3-point line.
Illinois blocked only 5.2% of its opponents' shots in 2015-2016. This clip ranked 333rd in the country.
A team's defensive steals percentage is a team's total number of steals divided by a its opponents' offensive possessions.
Stls% = Total steals / Possessions
2016 National Semifinalist Syracuse posted a 12.4% steals percentage in 2015-2016. This was good for 4th in the country.
Syracuse recorded 300 steals in its opponents' estimated 2,429 offensive possessions.
Stls% = 300 / 2,429.62 * 100 = 12.35
In comparison, Purdue's defensive steal percentage was about half of that at 6.1%. This ranked 339th in the country.
A team's defensive assist percentage is its opponents' total amount of assists divided by its opponents' made field goals. This includes both 3-point and 2-point makes.
A% = Opp. assists / Opp. FGM * 100
Kentucky led all Division-I teams limiting its opponents to a 40.4% assist percentage. Wildcats opponents had 336 assists on 827 made baskets.
A% = 336 / 827 * 100 = 40.63
Syracuse opponents registered a 67.3% assist percentage in 2015-2016. This was 349th amongst all teams.
Assist percentage sometimes has less do with defense, and more to do with style of play. Syracuse is known for its 2-3 zone, and to beat a zone, you must share the ball.
A team's defensive 3-point attempt percentage is the percentage of 3-point shots its opponents attempt divided by their opponents' total shot attempts.
3PA% = Opp. 3PA / Opp. FGA * 100
California opponents took 26.6% of their shots from behind the 3-point line in 2015-2016. This was 4th amongst all Division-I teams.
Cal opponents attempted 527 3-pointers out of 1,989 total shot attempts.
3PA% = 527 / 1989 * 100 = 26.5
In contrast, Monmouth opponents attempted 41.8% of their shots from behind the 3-point line. That's percentage ranked 337th in the country.
Remember: Teams have much more control over how many 3-point shots their opponents shoot than how many they make.