My favorite thing about the Belt Knows Best t-shirt is that there are five balls on the edge of the plate not four. This implies that Belt had a call go against him as is so often the case. It seems like Belt more than anyone gets rung up on pitches outside of the zone especially with two strikes. Duane Kuiper has often said that Belt knows the strike zone better than umpires, and we know that to be true anecdotally. Statcast, though, allows us to prove it.
I suspect that Belt has the opposite relationship with umpires as does Mike Trout.