In 1980, he won the Australian Open, becoming the second Jewish player to win a men's Grand Slam Singles event (after Dick Savitt). He won the final over Kim Warwick of Australia in straight sets. With his Grand Slam victory, Teacher is one of only five American male players in the Open era to have won a single Grand Slam event (along with Michael Chang, Vitas Gerulaitis, Andy Roddick, and Roscoe Tanner). Seven more Americans have more than one Slam (Stan Smith, Arthur Ashe, Jim Courier, Jimmy Connors, Andre Agassi, John McEnroe, and Pete Sampras).