On ,December 14 2007 — The Oakland Athletics trade 2007 All-Star Game starting pitcher Dan Haren (15-9, 3.07) and Connor Robertson to the Arizona Diamondbacks in exchange for Brett Anderson, Dana Eveland, Greg Smith, Chris Carter, Aaron Cunningham and Carlos Gonzalez. Oakland is hoping to repeat the success of the proven player for prospects type of arrangement that netted them Haren and others in the past.
In a separate transaction, Arizona deals Jose Valverde, the major league saves leader, to the Astros to get reliever Chad Qualls, second baseman/outfielder Chris Burke, and righty Juan Gutierrez.