What pitcher should I keep?

Travis Wood, Jeremy Hellickson, or Edinson Volquez. They all have potention. Hellickson probably has the most potential, but he is only 23 and one mistake people make in baseball is keeping people to early and then missing their breakout. Hellickson was good last year, but he only made four starts. Even if he breaks out this year, he is likely to get shut down around 150-170 innings. Travis Wood had a very good rookie season, is ball strike ration was impressive. He might get knocked around, however, in his second full season. Volquez will be attempting his first full season since Tommy john surgery. The Tommy Johny does have a pretty high success rate, but it could take Volquez a few months to bounce back. Although his numbers weren't great last year after he returned, his strikeouts were still there (67 k's in 62 2/3 innings).