Klimchock appeared in the 1963 Topps set-only as a member of the Washington Senators. He played for the Braves organization during the 1962 season (recording only 8 at-bats in Milwaukee; the rest of the year was spent at AA Louisville) but was traded to the Senators prior to the '63 season in a conditional deal. The condition: he would be returned back to Milwaukee, which happened on May 6, 1963. During his time in the majors that 1963 season, Lou appeared in 33 combined games while recording only 61 plate appearances.
The light-hitting infielder did manage to play in part of twelve major league seasons and today serves as president of the Arizona Major League Alumni, seeking to reach youth for the game as well as helping those in the game who have fallen on tough times.