Looks to me like we are getting at the real questions with Cozart. He's at least solid defensively and that is so critical at SS that it's not to be lost simply for an offensive upgrade, were one available. His OBP is below average for the position and not likely to get better. When it comes to OPS, he has been able to compensate for the low OBP with a bit higher SLG than one would expect from the slick fielding SS variety. But to some of us he has looked even less disciplined at the plate so far this year than previously and there is serious worry that he is not going to be able to maintain his previous OPS levels. So let's switch the focus from OBP to OPS in thinking about some number below which the FO simply has to make a move. And some time frame for Zack to get there. What is it? .650, .625, .600, .575?