We take a closer look at how Jason Day won his second title of the year on the PGA Tour.
Power plus putting
Quail Hollow is long and demanding, rewarding players who can carry the ball and still hold greens with mid irons.
Day's profile at his best combines that length with elite putting, which is close to an unbeatable combination when both arrive together.
The green reading edge
Elite putters win most of their shots on the middle range, from ten to twenty five feet, where reads and speed control matter more than stroke mechanics.
That is a skill that can be practised and measured, not a gift.
Measure your own range
Log first putt distances and outcomes for a few rounds. Most amateurs lose shots not by missing ten footers but by leaving thirty footers outside four feet.