I'll admit, I'm a little worried about Crowder defending Morris. Morris is taller, at least as strong, and possibly even more athletic.
Morris might be able to make us pay on the boards in ways much similar to how Chicago did in the beginning of that series. Morris will probably kill Crowder in that regard if Washington decides to have him crash the offensive glass.
On the opposite, Crowder, if he hits any shots, can space out their defense along with Horford pulling Gortat out of the lane. IT, when he has any space, is very tough. Horford's presence there is a major reason in the big jump we saw in IT's scoring this year.
There's a give and take there, but I'm a bit worried Morris will outplay Crowder. At his best, he's more than capable.