After Haywood left, McGee averaged 10 points, 6.5 boards and 2.2 blocks over an average of roughly 23+ minutes per game for the rest of the season.
Over the last 8 games, he averaged 13 points, 8.5 boards and 2.9 blocks over roughly the same average number of minutes per game.
Obviously, these numbers show an improvement. Do you have access to any defensive stats per game (such as those on 82games.com) to see if there was any improvement on D by the end of the season?
As McGee goes on D in 10/11, so go the Wiz.