I would think that on any given day that Baty is on the active MLB roster but not playing in a game (say, if Acuna is at 2B), then Baty becomes a likely late inning defensive swap for Vientos. Time will tell Really? From what I've seen this spring, admittedly not a lot of games, Vientos looks very good at 3B, really strong arm, good instincts, smart positioning. I wouldn't replace him defensively, unless maybe with Clete Boyer and Clete hasn't been feeling well these past few years anyway. I'll confess to only paying intermittent attention to these spring games, so, I trust any observations you've made on this point over my own presumptions from years past.