Diamondbacks' Justin Martinez: Sent back to Reno

Arizona optioned Martinez to Triple-A Reno on Thursday.

Martinez did not make an appearance during his two-day stay on the Diamondbacks' major-league roster. The 21-year-old right-hander has posted a 4.18 ERA, 1.71 WHIP and 38:27 K:BB in 28 innings of relief this season at the Triple-A level.