The kid is a stud, he was brought up as a starter, and that's what his ultimate role will be. He's far more valuable as a starter, he's got top 20 upside, and if he opens the season as a starter he's a top 40 guy to start. It may be rough the first time through, and I wouldn't be surprised to see him excel. The downside though is that he's never pitched more then 127 1/3 IP, which means that on the high end he'll be lucky to toss 150 IP...though I wouldn't be surprised if the Rangers capped him at 120 IP or so. If he starts/finishes the season as a starter he'll be a great keeper, as a lower price tag.