Watching the game, I felt like the Grizzlies, even when it was still in doubt, were getting the shots and the looks they wanted on most every possession.
A few shots were blocked and a few times they either took bad shots or were forced into bad shots, but more often than not they were getting looks at the basket that they normally make or getting the open jump shots that they normally make. Conley, for instance, got a lot of his normal looks and was clanging them off the front iron. Marc did the same a few times on shots he normally hits. The Grizzlies missed double digit lay ups (10-15 at least), and I'm not just talking about lay ups where the shot was altered significantly by a shot blocker. I'm talking 2 and 3 footers they normally hit. That's at least 20 points of offense they left on the floor simply missing easy buckets, many of which led to OKC breaks.
They shot 60% from the line, when they normally shoot 80%. They weren't getting any of the 50/50s, because they looked a step slow the whole night. So no, I didn't feel like OKC did anything special defensively. In fact I was more impressed with OKC's defensive effort in Game 2 than Game 5.
They looked like a team that was tired. Hopefully they'll be rested up for Game 6, and if they are I expect OKC to have to battle to be able to close out this series. If I'm Hollins, I flew the team home last night, and I've got my charter for OKC ready to go Friday night immediately following the game. I think OKC getting home and getting to sleep in with nothing to do on Tuesday was a huge advantage in last night's game.
It all depends on how rested the Grizzlies are and what type of energy they bring, but I expect them to win Game 6 as long as they show up ready to play.