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Evan Turner tries to block a Brandon Bass shot in Game 5.
The 76ers have excelled throughout the playoffs at playing defense, especially at holding opponents to a low field-goal percentage.
Chicago struggled to find their shooting groove against the 76ers, who contested every shot and fought for every loose ball. The 76ers didn't rebound too well, but they were able to escape with the series.
When Derrick Rose wasn't playing, the Bulls never topped 92 points (and in that game, Philly scored 109). However, Boston has topped 100 points twice, and in both games, they walked away victorious.
Game 5 was one of those two games where Boston scored 100+ points. The 76ers didn't play with the same tenacity on defense, and as a result, Boston scored at will in the third and fourth quarters.
At home, the 76ers shouldn't have the same problem, as they will likely be encouraged by the "win or go home situation" and the presence of their crowd. However, in Game 7, that problem could arise.
If it does, Philadelphia will be going home. So they have to contest every shot, fight for every loose ball and rebound, and force Boston out of the paint.
Without the defense we've seen Philadelphia bring in their victories, the 76ers will be going home empty.