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AUGUSTA, Ga. (AP) -- Winning the Masters is becoming a mental challenge for Rory McIlroy because it's the only major he lacks for the career Grand Slam.
The biggest hurdle might be Saturday.
For the third time in the last five years, McIlroy went into the weekend within range of the lead, only to blow up. He was one shot behind in 2012 and shot 77. He was four shots behind Jason Dufner in 2013 and shot 79. The attention was even greater this year because McIlroy was one shot behind and playing in the final group with Jordan Spieth.