"Tough one. It was up and down. I played really well, as good as I have in a long time and that was very encouraging". "But I managed my game pretty well, and pleased with the score that I shot, especially the way I drove the ball". I am aware that everyone is playing with different settings than others, and it makes it hard to recommend what route is the savviest.
"I was everywhere today". McIlroy stands two further back in fourth and still within sight of what would be a third FedEx crown.
The overnight co-leader was two strokes clear of Spain's Jon Rahm as the pair made their way to the back nine with former FedExCup champion Justin Thomas lurking a shot back on a hot day at East Lake.
"The rough is thick and nastier than I've ever seen it", Schauffele said.
Former FedExCup champion Justin Thomas was fourth at 10-under, while PGA Championship victor Collin Morikawa and England's Tyrrell Hatton were tied for fifth at nine-under.
Johnson hit the fairway on the first and fifth holes - both pars. "I knew my game was there and I knew that I've got the pedigree to play this Tour at a high level".More news: Yankees reliever Heller ejected for plunking Rays’ Renfroe
"I need to drive it a little better over the weekend if I want to win this golf tournament", Johnson said. It was nice just to see the family because I hadn't seen them for a couple weeks, so that was a big bonus.
As top seed in the points standings, Johnson started at 10-under par with a two-shot lead thanks to the staggered scoring system.
Im's 64 tied for the lowest round posted during the week.
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After Rahm made a 29-foot birdie putt at 12, Johnson followed him from 27 feet.
Justin Thomas pulled within one shot until he couldn't convert birdie chances and then drove so far left on the 18th that he had to pitch out sideways, leading to bogey and a 71.More news: NHC monitors four disturbances in the Atlantic basin
On the par-4 seventh, Matsuyama's 204 yard approach to 2 feet set himself up for the birdie on the hole.
Rahm, likewise, struggled. He shot 39 on the back nine, including a double bogey at the par-3 15th after sending his tee shot in the water.
Johnson was even through 11 holes before making birdies at 12, 13 and 15.
Johnson is joined at 13 under by Rahm, who opened with a 65 just days after his incredible win at the BMW Championship.
Im dropped his approach inside eight feet to birdie the par-3 15th, his next one inside three feet to birdie 16 and sank a three-footer for birdie at 18 to briefly share the lead.
By the time he reached the par-5 18th green in two, Im was looking at a 30-foot eagle putt to seize the lead alone.More news: Gordon Murray T50 supercar gets truck-only S version