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OCT 5, 8:42a ET | Rob Neyer
Rotowire: Aug 7 / 9:52p ET
News: Perez was traded to the Astros on Friday, the Arizona Republic's Zach Buchanan reports.
Impact: The 33-year-old southpaw has a 3.10 ERA and 37 strikeouts in 29 innings of relief this year and will offer another lefty option out of the Astros' bullpen down the stretch. The minor leaguer going back to the Diamondbacks in this deal has not yet been announced.
Rotowire: Jul 10 / 9:08a ET
News: Perez hasn't allowed an earned run since June 1, covering his last 12 outings and 7.2 innings, to lower his ERA on the season to 3.97 after it had peaked at just over 6.00.
Impact: Perez is primarily a situational lefty at this stage in his career, but he had become quite effective in that role, which made his early season struggles surprising. He has recorded 28 strikeouts in 22.2 innings this year, good for 11.1 K/9.