John Marks's Grand Slam Titles, Finals

John Marks's record in Grand Slam major singles finals.

YEAR	EVENT	WINNER	RUNNER-UP	SCORE
1978	Australian Open	Guillermo Vilas	John Marks	6-4, 6-4, 3-6, 6-3

• Grand Slam Finals Appearances: 1
• Grand Slam Titles: 0
• Grand Slam Finals Record: 0-1