1980 Jack Kramer Open  The 1980 Jack Kramer Open, also known as the Pacific Southwest Open, was a men's tennis tournament played on outdoor hard courts at the Los Caballeros Tennis Club in Fountain Valley, California in the United States. The event was part of the Grand Prix tennis circuit. It was the 52nd edition of the Pacific Southwest tournament and was held from April 14 through April 20, 1980. First-seeded Gene Mayer won the singles title and the corresponding $27,500 first-prize money. Gene Mayer defeated Brian Teacher 6–3, 6–2   Brian Teacher / Butch Walts defeated Anand Amritraj / John Austin 6–2, 6–4