The Red Sox acquired left-hander Mike Stanton from the Washington Nationals on Thursday for right-handers Rhys Taylor and Yader Peralta. Boston's trade means Stanton could wind up pitching this weekend against his former team, the New York Yankees. If the Red Sox advance to the playoffs, Stanton would not be eligible for the postseason roster. Stanton, who is 38, started the season with the Yankees and was cut June 30 after going 1-2 with a 7.08 ERA in 14 innings over 28 relief appearances. He signed with Washington on July 13 and went 2-1 with a 3.58 ERA in 27 2/3 innings over 30 games. "We'd like to thank Mike for the fine job he did not only in our bullpen, but with the knowledge and leadership he shared with our young pitchers," Nationals general manager Jim Bowden said. "We are pleased to acquire two young pitchers with good arms."