FYI: Only saw the last 1.5 quarters. So, I may not be the best to judge.
Normally, Isaiah uses his height to his advantage and somehow manages to outplay his opponent(s). Didn't see that tonight. Seemed like Cleveland exploited him both offensively and defensively. Should this continue I wonder if he should play a lesser role...at least for this series.
I say this in the context of our experience during the recent Big 3 era. We witnessed years where Doc would repeatedly keep the same player rotation no matter what the game circumstances. A second team player or players could be lighting it up all night and/or making stop after stop. Doc never budged. He'd robotically kept the same line-up. Used to drive me up a wall. Bet we lost at least 30 games that way. The good news is Brad's rotation is not always set. Thus, he is far better in this regard.
As for Isaiah, there are times when the opponent's height seems like an insurmountable obstacle. Yet, we've seen him persevere time after time. Tonight was not of those times. Maybe if the series continues this way I wonder if Brad should consider sitting Isaiah if another player or players are doing better. Any thoughts?