Collmenter will start for the Diamondbacks on Opening Day. Collmenter has been better than advertised over the past few seasons, posting a sub 3.50 ERA in each of the last two, though he spent 2013 in the bullpen. After a strong 2014 campaign in which he posted a 3.46 ERA, 1.13 WHIP and 115 strikeouts over 179.1 innings, he heads into 2015 locked into the Dbacks rotation, evidenced by his Opening Day start.