Rory McIlroy has won four times at Quail Hollow and holds the course record so goes into this week's US PGA Championship with a fearsome reputation, writes Iain Carter.

FLOURTOWN, Pa. - With all due respect to the Zurich Classic of New Orleans, the PGA Tour's lone team event, the Truist Championship was Rory McIlroy's first real test of golf since winning the Masters.

The statistic we care most about in golf, as fans and writers and players and sponsors and any other role you can imagine, is wins. It's the broadest statistic of them all, and maybe not the best in determining history’s most talented golfers,