Wainright or Iwakuma?

I want to drop one of these pitchers. Which one should I drop. Iwakuma or Wainright. Here is my division. My park is a pitchers park and the others look like they are hitting friendly. If this advice is not cool in preseason I understand.

Thanks in advance.

http://onlinegames.strat-o-matic.com/team/1387270

I guess Wainwright got the hook?