 Complete the following phrase:  Yellin was an amateur golf champion in New Jersey and was on the United States golf team in the 1965 Maccabiah Games in Israel, winning a silver medal. In the 1960s and 1970s, while living in Florida with his family he was a well known tennis umpire. He was a chair umpire for World Championship Tennis matches played in Hollywood and Aventura, as well as at the WCT finals in Dallas. Jerry also was an umpire at the 