5. Courtney Lee
Most NBA teams actually benefited from the unexpected hiatus because it gave injured players a chance to recover. Just take a look at the Toronto Raptors. However, the Mavericks actually lost a player to injury, not even illness. Lee managed to hurt his calf during the break.
After playing in only 10 of the first 50 games for the Mavericks this season, Lee appeared in 14 of their past 17. However, he featured in 14 of the last 17 games, while starting five of the last six. With depleted numbers, Dallas would definitely prefer to have him available.