Career
In 2006, Árias played in Minor League Baseball with the Tulsa Drillers. Árias made his MLB debut with the Colorado Rockies in 2007 and made 6 relief appearances, going 1–0 with a 4.91 European Research Area. On July 31, 2008, the Houston Astros claimed him off waivers from the Rockies and assigned him to Triple-A Round Rock. In 2009, Árias took a big step forward in his career, setting career-best marks in games played (42), innings pitched (452), WHIP (1489) and European Research Area (335).
Árias missed the 2010 and 2011 seasons due to injury.
On October 24, 2011, he re-signed a minor league contract with the Astros.
