In 2006, Arias played in Minor League Baseball with the Tulsa Drillers. Arias made his MLB debut with the Colorado Rockies in 2007 and made 6 relief appearances, going 1–0 with a 4.91 ERA. On July 31, 2008, the Houston Astros claimed him off waivers from the Rockies and assigned him to Triple-A Round Rock.\n', '

In 2009, Arias took a big step forward in his career, setting career-best marks in games played (42), innings pitched (45.2), WHIP (1.489) and ERA (3.35).\n', '

Arias missed the 2010 and 2011 seasons due to injury. On October 24, 2011, he re-signed a minor league contract with the Astros.\n', '

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