When you break it down Blatt had limited options. First off, Kyrie being out means more Delly right off the bat. Especially when Shumpert and Smith are struggling. Delly made some good hustle plays and didn't get burned too much either. The best player in the world shot 3-11 from the foul line in a 2 point overtime loss yet people on here are acting Delly cost us the game.
Secondly, Love got in early foul trouble which changed the rotation a bit and probably made things a bit tougher as we had to deal with a bit more James Jones than one would feel comfortable with. Love probably got a bit less aggressive after that.
Third, Houston plays small. Even when they have Motiejunas in, he seems to leave the post after the beginning of the game, especially in the 4th when the game becomes dueling ISO-ball. There is no point having Mozgov in there because he won't be sitting in the paint anyways. We can't have him out chasing 3 point shooters. Tristan was also phenomenal so that's about as big as you can get in the situation. People need to stop acting like Blatt doesn't like Mozgov. Have any of you heard about how much he loves the guy? Or about his experience with him? Blatt knows Mozgov better than anyone. Houston is a team I'd almost rather match up with when Howard is in the lineup. He slows them down and takes them away from their identity.
Our backup bigs with the exception of Tristan are all big boy matchups. Perk would have been a disaster because he can't chase guys out to the 3 point line.
Finally, with no production really from JR and Shump, you're rolling the dice hoping you get the occasional 3 from Smith and a nice defensive play from Shump.