During one of the telecasts, I think in 2020, Smalley commented that he drops his hands when he's batting, and when he does, he tends to not make contact. A few days later there was a report here, about Sano saying he needs to keep his hands up. If you watch him, it seems to be true. He keeps his hands up and makes better contact. Nothing to do with his weight, but if being lighter helps his mobility on first, or his stamina in general, all is good.