O'Donnell's final regular season baseball game saw him at second base when the Washington Senators were forced to forfeit their final game at Robert F. Kennedy Memorial Stadium to the New York Yankees on September 30, 1971. The Senators held a 7–5 lead with two outs in the ninth inning when unruly fans invaded the field, prompting crew chief Jim Honochick to declare the Yankees the victors by a 9–0 count. The Senators moved to Arlington, Texas prior to the 1972 season and became the Texas Rangers. Due to the timing of O'Donnell's resignation from the AL, he did not work an event in the Dallas-Fort Worth area until the Dallas Mavericks joined the NBA in October 1980. O'Donnell also did not work another event in the District of Columbia, since the NBA's Bullets were in Baltimore at the time of his resignation and moved to Landover, Maryland in 1973, where they played at the Capital Centre before moving to the MCI Center in downtown Washington in 1997.