Who was the last major leaguer to play for the Washington Senators at one time in his career?

The last player to have played for the Washington Senators was Toby Harrah, who was with the team for its final two seasons in Washington, and its first seven years as the Texas Rangers. Harrah went on to play eight more seasons after leaving the Rangers, and retired after the 1986 season, becoming the final player from the Senators to retire. In his two seasons as a Senator, he batted .229 in 135 games, with 2 home runs and 10 stolen bases.