 Together with John Danks and Thomas Diamond, Vólquez was one third of the "DVD" trio of Rangers pitching prospects.After spending four years in the Rangers' minor league system, Vólquez made his Major League debut on August 30, 2005 in a start against the Chicago White Sox.He lost all three Major League games he started that season, as well as one of the three games in which he appeared as a reliever, and posted a 14.21 ERA.