Doesn't really have anything to do with physical limitations. Brice is bad on D because of mental imitations and Walt is just a rookie playing alongside a bunch of young playersRight now, Brice and Walt are below average defenders due to physical limitations. (Ace also misses rotations and close-outs, but that’s more processing than ability.) Put those two on the floor together with Nurkic, who can no longer guard space well, and the Jazz bleed points pretty fast.
They were -20 in 4 minutes last night, and the game was effectively over in the 1st quarter. The tank is in good hands.