Patrick Cantlay has a greens in regulation percent per round of 1.12 in his career.

		NAME	GIR%/ROUNDS	GIR%	ROUNDS	EVENTS	TOP 10	WINS	MONEY
1		Patrick Cantlay P. Cantlay	1.12	740.4	664	176	62	8	$52,908,996

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