Harry Hall survived back-to-back double bogeys to head into the final round of the Charles Schwab Challenge tied for the lead in pursuit of his first PGA Tour victory.
The 25-year-old Cornish rookie heads into the last day alongside American Adam Schenk with Harris English a shot further back.
With the scoring average at Colonial Country Club rising to more than one over par in the third round as the greens toughened up, Hall opened with a three-stroke lead and five straight pars before he hit trouble – an errant approach at the sixth and an iron into a muddy creek at the seventh leading to a pair of sixes.
Two birdies on the way home gave him a round of 72 and a place in the final pairing with Schenk – also chasing his first win after six years on tour – who shot a bogey-free 67 to tie at 10 under par.
“I’m never going to stop fighting,” Hall said. “I’m always going to keep trying.
“This game brings you new challenges every day and I’m equipped to deal with them. I think I showed that today, I kept a lot of patience and I kept to my game plan. I’m ready. Just get on the green and make some putts.”
English was on course for a share of the lead before bogeying the last to lie a shot behind.
American Justin Suh and Emiliano Grillo of Argentina are three strokes further back with Viktor Hovland among a group on five under par.
England’s Aaron Rai shot a third-round 67 to be tied for 10th in a group on four under par which includes world number one Scottie Scheffler after his 72, a score matched by Justin Rose who is a shot further back.