Dustin Johnson lost his yardage book and still found his way through an enormous crowd of contenders Saturday, making eight birdies at Harding Park for a 5-under 65 and a one-shot lead in the PGA Championship.

Nothing ever comes easily for Johnson in the majors. In this case, his brother had a spare yardage book. Even that might not have stopped Johnson from making his most birdies in any round of a major.

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Dustin Johnson hits from the bunker on the 18th hole during the first round of the PGA Championship golf tournament at TPC Harding Park Thursday, Aug. 6, 2020, in San Francisco. (AP PhotoJeff Chiu)

Dustin Johnson lost his yardage book and still found his way through an enormous crowd of contenders Saturday, making eight birdies at Harding Park for a 5-under 65 and a one-shot lead in the PGA Championship.

Brooks Koepka lines up a putt on the 13th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Johnson was among eight players who had at least a share of the lead at some point Saturday, a wild third round of low scores, long putts and endless possibilities.

Scottie Scheffler chips to the green on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Johnson was at 9-under 201 as he goes for his second major title. For all the chances he has had, this is only the second time he has led going into the final round.

Scottie Scheffler smiles on the 17th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Missing from all this action is Tiger Woods, who didn't make a birdie until the 16th hole and is out of the mix for the fourth straight major since his emotional Masters victory last year.

Paul Casey walks past a flock of geese on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Johnson didn't have smooth sailing, either, especially when he couldn't find his yardage book. He thinks it slipped into the bottom of the golf bag, and he didn't feel like dumping his 14 clubs all over the ground to find it. Austin Johnson, his brother and caddie, had a spare.

Cameron Champ putts on the 16th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ putts on the 16th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ watches his tee shot on the 15th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ watches his tee shot on the 15th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Tiger Woods walks to the 12th green during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Tiger Woods walks to the 12th green during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, watches his tee shot on the fourth hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, watches his tee shot on the fourth hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, hits his tee shot on the second hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Li Haotong of China, hits his tee shot on the second hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

And he needed them all.

Dustin Johnson hits from the bunker on the 18th hole during the first round of the PGA Championship golf tournament at TPC Harding Park Thursday, Aug. 6, 2020, in San Francisco. (AP PhotoJeff Chiu)

Dustin Johnson hits from the bunker on the 18th hole during the first round of the PGA Championship golf tournament at TPC Harding Park Thursday, Aug. 6, 2020, in San Francisco. (AP PhotoJeff Chiu)

Johnson was among eight players who had at least a share of the lead at some point Saturday, a wild third round of low scores, long putts and endless possibilities.

One possibility is Brooks Koepka hoisting the Wanamaker Trophy for the third straight year, which hasn’t happened since Walter Hagen won four in a row in the 1920s when it was match play. Koepka was one shot behind when he made a few careless mistakes, ran off three straight bogeys and had to birdie the 18th for a 69 to stay within two shots.

Scottie Scheffler, the PGA Tour rookie from Texas, bogeyed his last hole for a 65 and was one shot behind with Cameron Champ (67), who grew up in Sacramento and has the most powerful swing on tour.

Brooks Koepka lines up a putt on the 13th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Brooks Koepka lines up a putt on the 13th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Johnson was at 9-under 201 as he goes for his second major title. For all the chances he has had, this is only the second time he has led going into the final round.

“I'm going to have to play good golf if I want to win. It's simple,” Johnson said. “I've got to hit a lot of fairways and a lot of greens. If I can do that tomorrow, I'm going to have a good chance coming down the stretch. ... I'm just going to have to do what I did today. Just get it done."

Among the cast of contenders are major champions like Koepka, Jason Day and Justin Rose, and fresh faces like Scheffler, Champ and Collin Morikawa. Also right there was Bryson DeChambeau, thanks to a 95-foot putt for birdie on his last hole. Turns out he can hit long putts, too.

Scottie Scheffler chips to the green on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Scottie Scheffler chips to the green on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Missing from all this action is Tiger Woods, who didn't make a birdie until the 16th hole and is out of the mix for the fourth straight major since his emotional Masters victory last year.

A dozen players were separated by three shots.

Li Haotong, the first player from China to lead after any round at a major, was leading through 12 holes until his tee shot didn't come down from a tree. He made double bogey, dropped two more shots and finished four shots out of the lead.

Scottie Scheffler smiles on the 17th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Scottie Scheffler smiles on the 17th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Johnson didn't have smooth sailing, either, especially when he couldn't find his yardage book. He thinks it slipped into the bottom of the golf bag, and he didn't feel like dumping his 14 clubs all over the ground to find it. Austin Johnson, his brother and caddie, had a spare.

Johnson shot 65 even with a double bogey on the ninth hole. Mistakes like that might be more costly on Sunday, the first major without any spectators. There was some concern that so many people in contention and no noise on the golf course might make it difficult for contenders to keep track of what's going on.

Then again, Johnson won the U.S. Open in 2016 at Oakmont without knowing the score as the USGA tried to decide whether he should be penalized.

Paul Casey walks past a flock of geese on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Paul Casey walks past a flock of geese on the 18th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Cameron Champ putts on the 16th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ putts on the 16th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ watches his tee shot on the 15th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Cameron Champ watches his tee shot on the 15th hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Tiger Woods walks to the 12th green during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Tiger Woods walks to the 12th green during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, watches his tee shot on the fourth hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, watches his tee shot on the fourth hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoJeff Chiu)

Li Haotong of China, hits his tee shot on the second hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)

Li Haotong of China, hits his tee shot on the second hole during the third round of the PGA Championship golf tournament at TPC Harding Park Saturday, Aug. 8, 2020, in San Francisco. (AP PhotoCharlie Riedel)