Sergio Garcia birdied seven consecutive holes coming home and eight of nine on the back nine to match the South Course record of 61 Friday in the second round of the World Golf Championships-Bridgestone Invitational at Firestone Country Club.
Garcia holed 11 consecutive one-putts during his birdie binge and needed 23 putts for the round.
Tiger Woods shot 61 twice, in 2000 and 2013, along with Jose Maria Olazabal in 1990.
Garcia shot 27 on the back nine. With a total of 11-under par, Garcia leads Justin Rose by three shots going into Saturday's third round.
"It's just one of those moments you love and you enjoy and you wish they would never end," Garcia said. "I don't even know what a zone is. I was very comfortable, very calm, I could see what I wanted to do on almost every shot. I was seeing the lines on the putts quite well."
Garcia said his best putts came at Nos. 17 and 18, when he sank 20- and 19-footers, respectively. He was also proud of his 8-iron approaches on Nos. 12 and 13.
On No. 11, the only hole he didn't birdie on the back, Garcia said he missed the green by 11/2 inches.
This year, Garcia has played in 11 events with two seconds, two thirds and seven top 10s. He's earned over $3.4 million.
"The whole year, it's been a solid year for me. If you look at the way I've been playing, I have a lot of high finishes," he said.