Diamondbacks' Ryne Nelson: Lands on 15-day IL

The Diamondbacks placed Nelson (elbow) on the 15-day injured list Friday.

Nelson left Thursday's game against the Rockies after he took a comebacker off his arm in the second inning. Nelson will be replaced on the active roster by left-hander Jordan Montgomery, who will make his season debut Friday against the Giants. Nelson has started four games this season, posting a 4.60 ERA, 1.53 WHIP and 13:5 K:BB over 15.2 innings.