If you're surprised by Rory McIlroy's decision not to play in this week's Memorial Tournament, you're not the only one. In fact, McIlroy's decision also came as a surprise to Jack Nicklaus, the 18-time major winner and the founder and host of the tournament.

Though the Masters champion is missing his third signature event of the year, the PGA Tour commissioner noted Rory McIlroy's “extraordinary” long-term support.