National League roundup: Ex-CMU ace Josh Collmenter loses to Rockies

Carlos Gonzalez homered twice and the Colorado Rockies became the first team to decipher Josh Collmenter's tomahawk-throwing style, rallying past Arizona, 12-4, Tuesday despite losing pitcher Jorge De La Rosa in the opener of the day-night doubleheader.

De La Rosa exited in the third inning with soreness in his left elbow. Colorado ended its three-game skid and stopped the Diamondbacks' six-game winning streak in this makeup from an April 3 snowout.

Greg Reynolds (2-0) threw 3 2/3 effective innings, allowing one run and three hits. He was recently called up and set to start Saturday, but was pressed into duty when De La Rosa, coming off his first career complete game in a 2-1 loss to Philadelphia, had to leave.

Collmenter (Central Michigan), the Arizona rookie with the unusual straight overhand delivery, blanked Colorado for three innings to run his scoreless streak to 24 before he gave up solo homers to Gonzalez and Seth Smith in the fourth.

Collmenter, 25, allowed five runs, although just two of them were earned, and five hits in 4 1/3 innings. He walked two and struck out one in a shaky outing after two solid starts that had the baseball world abuzz.

Coming into the game, Collmenter had allowed just two runs in 26 innings, with 15 strikeouts and one walk.