Tom Okker and Marty Riessen were the defending champions but did not compete that year.
Brian Gottfried was the defending champion but lost in the quarterfinals to Peter Fleming.
Roscoe Tanner was the defending champion and won in the final 6–4, 6–2 against Brian Gottfried.
Bruce Manson and Brian Teacher were the defending champions but only Manson competed that year with Rick Leach.
Wojciech Fibak won in the final 6–7, 6–3, 6–4, 2–6, 6–1 against Raúl Ramírez.
Victor Pecci and Balázs Taróczy were the defending champions but did not compete that year.
Stan Smith was the defending champion but lost in the second round to Raymond Moore.
Jimmy Connors was the defending champion and won in the final 7–6, 4–6, 6–3 against Raúl Ramírez.
Haroon Rahim and Erik Van Dillen were the defending champions but only Van Dillen competed that year with Dick Crealy.
Brian Gottfried and Raúl Ramírez were the defending champions and won in the final 7–5, 6–3 against Fred McNair and Sherwood Stewart.
Peter Fleming and John McEnroe were the defending champions, but McEnroe did not participate this year. Fleming partnered Sandy Mayer, losing in the semifinals.
Pat Cramer and Mike Estep were the defending champions, but Cramer did not participate this year. Estep partnered Russell Simpson, losing in the second round.
Brian Gottfried and Raúl Ramírez were the defending champions, but lost in the quarterfinals this year.
Bob Hewitt and Frew McMillan were the defending champions, but lost in the semifinals to Peter Fleming and John McEnroe.
Vitas Gerulaitis and Sandy Mayer were the defending champions, but lost in the quarterfinals to Ross Case and Geoff Masters.
Brian Gottfried and Raúl Ramírez were the defending champions, but lost in the first round to Jim Delaney and Sashi Menon.
Owen Davidson and John Newcombe were the defending champions, but competed this year with different partners. Davidson teamed up with Ken Rosewall and lost in second round to Anand Amritraj and Vijay Amritraj, while Newcombe teamed up with Tony Roche and lost in semifinals to tournament runners-up Patricio Cornejo and Jaime Fillol.
Tom Okker and Marty Riessen were the defending champions but lost in the quarterfinals to Syd Ball and Kim Warwick.
Brian Gottfried and Raúl Ramírez were the defending champions but lost in the semifinals to Gene Mayer and Henry Pfister.
Fred McNair and Sherwood Stewart were the defending champions but lost in the first round to Greg Halder and Dale Power.
