American Xander Schauffele will take a one-shot lead in the final round of the Charles Schwab Challenge in Texas.
Schauffele birdied the last for a four-under 66 to move to 13 under and jump clear of five players on a congested leaderboard at Colonial Country Club.
Justin Thomas, Jordan Spieth, Gary Woodland and Collin Morikawa and South African Branden Grace are 12 under.
England’s Justin Rose dropped two shots in his last three holes and is 10 under with world number one Rory McIlroy.
Northern Ireland’s McIlroy had three birdies and two bogeys in a one-under-par 69 and said he was “within striking distance” for Sunday’s final round.
“I didn’t think I was going to play well, but looking at the leaderboard, no one else pulled out,” he added.
Rose, who won the event in 2018, said “everything will be on the attack” on Sunday after admitting he was disappointed with his back nine on Saturday.
“It was a mixed sack for me,” he said after signing for a 68 that contained six birdies, a double bogey and two bogeys.
“I love competing here. It offers a lot of birdie opportunities and my putting was amazing, but it collapsed a bit on the back nine. »
Americans dominate the rankings
On another gloriously sunny day in Fort Worth, all eyes were on Harold Varner III, the world number 124 who was co-leader with Rose after the first round and the only leader after the second round.
The American birdied the first but parred the next 12 holes before dropping a shot on the 15th and closing with three more pars to finish the day when he started on 11 under.
His playing partner Jordan Spieth quickly joined Varner III at the top of the leaderboard and went off the field when he holed his fourth birdie of the round on the ninth to reach 13 under.
However, he also bogeyed the 15th and was briefly in a six-way lead as he carded a two-under 68.
World number four Thomas had a bogey-free 66, while Woodland closed with two birdies in his 66 and were joined at the top of the leaderboard by Morikawa, who holed five birdies on his back nine in a 67.
In fact, Grace (66) is the only non-American in a top 10 that is completed by Patrick Reed who hit the lowest round of the day, a bogey-free 63 to improve to 10 cents.
More to follow.