Rory McIlroy says winning the Masters to complete a long-sought career Grand Slam will change how he feels going into other majors, starting at next week's PGA Championship. World number two McIlroy defeated England's Justin Rose last month at Augusta National to capture his fifth major title, and first since 2014, to finally take the green jacket and complete the career Slam. The 36-year-old from Northern Ireland joined Jack Nicklaus, Tiger Woods, Gary Player, Gene Sarazen and Ben Hogan with wins in all four major tournaments.