Defense:
Shaq’s 2000 season was his best defensive performance ever. The Lakers finished #1 in Defensive Rating (-5.9 relative to league average according to B-R), 1st in FG% allowed, 3P% allowed. Shaq led the league in Defensive Win Shares. Shaq’s man defense was a huge part of that. According to Hoopsstats.com, the Lakers in 2000 allowed 14.0 PPG, 40.7 FG% to opposing center. They had the best PPG against Centers, FG% against centers, and finished with the 2nd fewest FTA/game allowed to Centers.
http://www.hoopsstats.com/basketball/fa ... 10/pts/1-1
Top TS% defense:
Lakers: .455 TS% (.453 in the games Shaq played)
Spurs: .486 TS%
Heat: .490 TS%
The League average center was .526 TS% so the Lakers were -7.1 TS% relative to League average and they beat the Robinson/Duncan Spurs by 3.1 TS% for 1st place. An impressive feat.
Here are some more facts from Hoopsstats.com. Here are the best opposing Center PPG and FG% defense since hoopsstats started collecting the stat (from 1998-2013)
Top opponent Center PPG defense from 98-13:
06 Heat: 12.8 PPG (Shaq)
04 Lakers: 12.9 PPG (Shaq)
06 Jazz: 12.9 PPG
Top opponent Center FG% defense from 98-13:
00 Lakers: 40.7 FG% (Shaq)
99 Spurs: 41.1 FG% (Duncan/Robinson)
99 Hawks: 41.9 FG% (Mutombo)
Shaq’s teams finished #1 in 00 and 05, #2 in 01, 02 and #3 in 98 and 06.
Here is a comparison between Shaq and Alonzo Mourning, the 2000 DPOY, for that season:
Teams On Court Defensive Rating:
Shaq 95.3 pts allowed per 100 possessions with Shaq on the court
Mourning: 97.7 points per 100 allowed
These are the stats of all Centers in the league that played 24 minutes in a game vs Shaq/Mourning in 2000. Numbers are Per 36:
vs. Shaq: 12.46 PPG, 42.5 FG%, .462 TS% 1.48 AST-1.68 TOV
vs. Mourning: 12.53 PPG, 45.4 FG%, .512 TS%, 1.23 AST-1.83 TOV
vs. league average: 13.97 PPG, 50.2 FG%, .547 TS%, 1.50 AST-2.02 TOV
*League average does not include Shaq
Dropoff: Shaq-League Avg: -1.21 PPG, -7.7 FG%, -8.5 TS%, -0.2 AST, -0.34 TOV
vs Shaq: 10% 20+ points, 25% 15+ points, 48% <10 points
vs. Mourning: 14% 20+ Points, 20% 15+ points, 44% <10 points
League average: 13.9% 20+ Points, 32.1% 15+ points, 38.2% <10 points
Here is what Shaq did vs. the top 5 non-Shaq scorers at Center that year:
vs. Shaq (parenthesis is their regular season average):
Mourning: 27 PPG, 44.2 FG%, .513 TS%(21.7 PPG, 55.1 FG%, .596 TS%)
DRob: 13.3PPG, 42.1 FG%, .462 TS% (17.8 PPG, 51.2 FG%, .568 TS%) (had 15 Points on 54.5 FG% in the game Shaq missed)
Ewing: 13 PPG, 32.4 FG%, .343 TS% (15 PPG, 46.6 FG%, .516 TS%)
Smits: 8 PPG, 47.1 FG%, .471 TS% (12.9 PPG, 48.4 FG%, .518 TS%), 10 PPG 46.6 FG% in finals vs. Shaq
Campbell: 7 PPG, 28.6 FG%, .308 TS% (12.7 PPG, 44.6 FG%, .500 TS%)
Average dropoff is -2.2 PPG, -10.3 FG%, -12.0 TS%.

That is a significant dropoff.
Playoffs (regular season averages in parenthesis):
Divac: 11.2 PPG, 35.7 FG%, 423 TS% (12.3 PPG, 50.3 FG%, .552 TS%)
Longley: 5.2 PPG, 37.1 FG%, .330 TS% (6.3 PPG, 44.6 FG%, .512 TS%)
Sabonis: 8.3 PPG, 38.2 FG%, 22.2 3P%, .471 TS% (11.8 PPG, 50.5 FG%, 36.8 3P%, .568 TS%)
Smits: 10 PPG, 46.6 FG%, .495 TS% (12.9 PPG, 48.4 FG%, .518 TS%)
Average dropoff: 2.2 PPG, -9.3 FG%, -10.8 TS%

Shaq was elite on man defense again in the playoffs.
Here is a breakdown on the Lakers defense in the paint
With Shaq on court: 33.5 Points in the paint allowed per 48 minutes
Shaq off the court: 38.8 Points allowed per 48
5.3 points per 48 minute difference. Teams shot 148 more mid range shots with Shaq on the court than against any other player in the league.