But while McIlroy strives to claim a fifth Major history now beckons for Hideki Matsuyama.
Justin Thomas and Louis Oosthuizen are right behind them at five under. The third round will be played in groups of three, all of which will start from No. 1. So not only did the Austrian fail to move the cut line, he wound up missing the cut with that bogey on his last hole.
In third, two strokes behind, is 2015 USPGA Champion Jason Day who fired a five under par 66 on Friday.
The problem is Matsuyama's disgust turned out to be justified.
The 30-year-old Kiwi climbed from 80th overnight at Quail Hollow into a share of 11th, amassing six birdies with his only blemish a bogey at the par-four 11th.
But he recovered quickly, draining a 14m birdie bomb at the par-3 13th before backing up with another birdie on the 14th. He salvaged pars the rest of the way to remain one shot off the pace. For once McIlroy had an off day with the driver, which compromised his approach shots to the greens and, averaging only 46 feet proximity to the hole, piled the pressure on the putter.
Team Liquid Wins the Dota 2 International Tournament, $10.7 Million Grand Prize
After yesterday I think Liquid are on a huge upswing, if they can take game one I'm confidant they can with this series. To claim the Aegis of Champions today, they had to fight through a pool that kept the world at the edge of their seats.
Spieth did not elaborate on why the PGA should be more hard for him to win, although it is traditionally set up to showcase lower scores. "I had a shaky start but as the round progressed things became better".
In the first round, Spieth nearly lost a chance to connect when he birdied two consecutive holes before putting two birdies to get back into the chase for another Grand Slam. After shooting two four-under 67s to hold the halfway lead, the SC native held his nerve on a tough day of scoring to top the leaderboard going into the final round.
After Jordan Spieth finished play Friday afternoon at 3-over par for the tournament and 11 strokes behind the co-leaders, he said, "I kind of accept the fact I'm essentially out of this tournament pending some form of insane stuff the next couple of days". "I feel like I have the game to compete in majors, and tons of 30th, 40th and 50th-place finishes".
"It was nice to be able to drive the way I did today and set myself up with the opportunities and being able to capitalise on those opportunities felt even better", he said.
That's because the Aiken, S.C., native didn't have to worry about the inclement weather that suspended play on Friday afternoon at the PGA Championship. Lahiri then closed with birdies on par-5 seventh and ninth for a respectable 72, a score that was also brought in by Jordan Spieth and Rory McIlroy.