The top three players in the world are on top of their games going into the Memorial.
Jason Day hasn't played since he won The Players Championship three weeks ago to tighten his grip on No. 1 in the world. During his time away, Rory McIlroy went home and won the Irish Open with two of the best fairway metals he has ever hit.
The following week, Jordan Spieth won at Colonial.
Day believes his latest run has inspired Spieth and McIlroy to raise their games.
Spieth and McIlroy will be playing together at Muirfield Village when the Memorial starts Thursday. Day is a member at Muirfield Village, though he has never finished better than a tie for 27th.