TheĀ Oakland AthleticsĀ tradeĀ 2007 All-Star GameĀ starting pitcherĀ Dan HarenĀ andĀ Connor RobertsonĀ to theĀ Arizona DiamondbacksĀ in exchange forĀ Brett Anderson,Ā Dana Eveland,Ā Greg Smith,Ā Chris Carter,Ā Aaron CunninghamĀ andĀ Carlos Gonzalez. Oakland is hoping to repeat the success of the proven player forĀ prospectsĀ type of arrangement that netted them Haren and others in the past.

On ,December 14 2007 — TheĀ Oakland AthleticsĀ tradeĀ 2007 All-Star GameĀ starting pitcherĀ 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.