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The bench has done an admirable job of stepping up in the wake of Rajon Rondo's injury.
But there's been further depth depletion in the form of Jared Sullinger's back injury and Leandro Barbosa tearing his ACL. That's three rotation players the C's have lost, and the only major acquisition they made was Jordan Crawford at the trade deadline.
Doc Rivers told The Boston Globe:
We can't forget: The bench has been good for four or five games before all the injuries. They were playing great and I was complaining about the starters. Now, the starters are playing as well as the bench. You can almost make that case, which is really nice.
In the first four games without Rondo, the C's bench averaged 46 points per game, which was 46 percent of the team's offensive output.
Avery Bradley has also been very impressed with the play of the second unit, saying:
There's no drop-off. That's how it's supposed to be. When the starters come out of the game, the second unit is supposed to come in and keep it rolling, and that's what we've been doing. It's always hard to beat a team that's like that, that has a great second unit that could be a starting lineup.
With the C's bench outproducing the opponent's on a nightly basis, the depth has actually improved despite the subtractions.
As improbable as that sounds, there's a reason the C's play without Rondo has been so surprising: Everyone has stepped up their production and proved a team can improve its overall play without the services of a player who may have been relied upon too heavily to begin with.