Hale Irwin hit 68.5 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		Hale Irwin H. Irwin	68.5	1980	87	9		71.1	87	72.7	250.2		50.4			$109,810

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