I think the thing about Arcia that causes some frustration with him is that there were expectations, fair or not, brought upon by his prospect ranking that just don't really seem to be coming to fruition. He has good stretches and bad stretches, but for the most part, he doesn't vary much from who he is. He'll go cold at the plate at times, and other times he'll go the other way nicely and look good up there. Defensively, he'll boot some easy balls, and other times he'll dazzle on some difficult plays. Arcia has over 1400 PA's at the MLB level and is in his 4th season at this level. He has accumulated just 0.7 fWAR in those 4 seasons, Baseball Reference being slightly more optimistic at 2.7 bWAR. Both tell the same story -- the things he does well simply aren't enough to overcome the things he doesn't and make him any more than a slightly below average starter for his position. Arcia is a guy who will probably have a long MLB career, and more than likely the last 5 years or so will be as a utility infielder because of his defensive prowess. But as a starter, he's very replaceable and when you look at the state of SS around MLB these days -- Correa, Baez, Turner, Lindor, Story, and others, Arcia is just not a guy who is probably ever going to be in that upper echelon. Now I will disclaim this by saying -- he is still young, and just because he's in his 4th season doesn't mean he won't still improve. Player development isn't linear, and he certainly wouldn't be the first young player who struggles in his early 20's and starts to flip a switch in his mid 20's. But the more likely scenario, I think, is that this is probably just who Arcia is. You can get by with him, but you won't miss much without him. He just doesn't have the track record with the bat, either at this level or in the minors, to make me all that confident that he's ever going to be a plus hitter.