A brutal back-nine collapse at Augusta in 2011. A winless PGA Tour season in 2013. Repeated second-round stumbles in 2014. McIlroy's game can have its dry spells, but rarely have they sparked self-doubt. Two months after the Masters spill came his U.S. Open triumph. A week after another Freaky Friday at the Scottish Open comes a second-round 66 at Hoylake en route to winning the claret jug. McIlroy has shown he's not immune to the occasional slump. But he's also proven capable of bouncing back. -- R.H.