Interesting draft...I noticed you went the MR rout, which can be successful depending on what the minimum innings pitched is in your league. You aren't going to procure many Wins, but that goes with the territory which you chose. I think you might run into trouble if you square off against a team with a strong SP rotation. In that situation, you won't be able to match the amount of Innings pitched which will mean a loss of Wins and K's; and if a couple of your closers have a bad week, you can kiss the ERA and WHIP good-bye. I don't see that happening often though, but be mindful of it.
Your batting is pretty solid, as you put most of your focus on that. I'm not sold on Renteria, personally. The same goes for the injury-prone Rickie Weeks. Towles is a sub-par catcher, but I'd understand if you had no better options.
Check out my recent draft. I had the same approach as you, going for MR's. Share ideas about your strategy ...viewtopic.php?f=29&t=328573