1980 Mutual Benefit Life Open

The 1980 Mutual Benefit Life Open, also known as the South Orange Open, was a men's tennis tournament played on outdoor clay courts at the Orange Lawn Tennis Club in South Orange, New Jersey in the United States. The event was part of the 1980 Grand Prix circuit. It was the 11th edition of the tournament and was held from July 28 through August 4, 1980. Second-seeded José Luis Clerc won the singles title and earned $15,000 first-prize money.^[3]

1980 Mutual Benefit Life Open
Date	July 28 – August 4
Edition	11th
Category	Grand Prix
Draw	32S / 16D
Prize money	$75,000
Surface	Clay / outdoor
Location	South Orange, New Jersey, US
Venue	Orange Lawn Tennis Club
Champions
Singles
José Luis Clerc[1]
Doubles
Bill Maze / John McEnroe[2]

Finals

Singles

José Luis Clerc defeated John McEnroe 6–3, 6–2

• It was Clerc's 2nd singles title of the year and the 6th of his career.

Doubles

Bill Maze / John McEnroe defeated Fritz Buehning / Van Winitsky 7–6, 6–4