The Englishman ran off six birdies on the back nine and six more on the front nine at the Country Club of Jackson, and he faced one last birdie putt from just inside 10 feet on his final hole. It never had a chance, missing on the low side.
The 42-year-old Skinns, still had a three-shot lead over Michael Thorbjornsen.
"How many 9-footers are you going to get to shoot 59?" Skinns said. "I'm sure I'm not going to get many.
"Tough not to be a little bit disappointed, but I really want to just look back on how in control mentally I felt, how I kept attacking. Wasn't really thinking about the future at all, which is kind of the thing I'm going to take away from today."
The future is a big part of the Sanderson Farms Championship, one of eight PGA Tour events in the "FedEx Cup Fall" that determines the 125 players who keep a full card for next year.
Skinns was at No.108, and his 60 gives him a big step in the right direction.
Rickie Fowler was among those playing in the afternoon. Fowler is at No.110 but has another year of full exemption from winning the Rocket Mortgage Classic last year. Fowler, whose wife gave birth to their second daughter, is playing for the first time since the British Open.
Skinns hit only five fairways, but he was rarely out of position. The two times he was not on the putting green in regulation he made birdie. He also holed birdie putts of 55 feet and 25 feet during the round, and five other birdies outside 10 feet.
"Great to see a couple go in that maybe some days don't," Skinns said. "Just kind of catapulted, and I was able to keep the momentum going, which is what I was most pleased about. I never really thought about the score too much, just where I was going to hit the next shot."
Mackenzie Hughes and Patton Kizzire, who won the first FedEx Cup Fall event at the Procore Championship, were in the group at 65.
He is No.51 in the FedEx Cup and will get into the first two $20 million signature events if he stays in the top 60.
As for Skinns, he left the Country Club of Jackson thinking about one putt that missed and determined to remember the 12 that went in.
"I had it about probably a ball outside the cup. If I could do it again I'd have it a cup outside. Just broke way more than I thought," Skinns said.
"Just so happened that that was for a 59. But there were a lot out there that I got right, so I'm going to focus on the ones that I got right."
Aaron Baddeley, the lone Australian in the field, had a one-over 73 and will have to shoot the lights out on Friday to make the cut.
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