Brad Stevens: "We couldn't stop a nosebleed"

Brad Stevens was noticeably irritated with another lackluster Celtics defensive effort last night. While it looked like the team might have been turning the defensive corner the previous couple of games against inferior opponents, we wondered if it would be a temporary change for the better or the team would revert to its poor defensive habits. Apparently it was the latter.

You rarely see Stevens get very upset. He's like Erik Spoelstra like that, but his teams are known for being solid defensively, so I'm sure this is ticking him off. Sp who do you think are the main culprits? It's a lot easier to bench role players if they aren't giving their all on the defensive end. Definitely not as easy if it's your stars.