A's left-hander Gio Gonzalez was dealt to the Nationals Thursday for four prospects, a team source told ESPN Insider Keith Law. "It's 99 percent done," Gonzalez said in a phone interview with The Associated Press. "It's pending a physical and I'm just waiting to hear from my agent." The A's will receive right-hander Brad Peacock, catcher Derek Norris, left-hander Tommy Milone and right-hander A.J. Cole.