Harmon got his first hit on April 25, 1954. Starting and leading off for the Reds at home in Crosley Field in a 3-2 win over the Chicago Cubs, Harmon singled in the first inning off Howie Pollet. He later doubled and scored on an error, and drew one walk. His final game was the site of his first, Milwaukee's County Stadium on September 15, 1957 where, appearing as a pinch runner for the Philadelphia Phillies, he scored his final run on a double play.