Mark Hayes hit 64.9 percent of greens in regulation in 1980.

		NAME	GIR%	SEASON	EVENTS	TOP 10	WINS	SCORING AVG	ROUNDS	FWY%	DRIVING DISTANCE AVG	PUTTING AVG	SAND SAVE%	SCRAMBLING %	FEDEXCUP POINTS	MONEY
1		Mark Hayes M. Hayes	64.9	1980	97	5		72.3	104	66.7	257.2		47.9			$66,535

StatMuse has season-level data for greens in regulation percent going back to the 1980 season.