Abraham Ancer holds a one-shot lead going into the final round of the Dell Technologies Championship in Boston.
The 27-year-old, who has dual American and Mexican citizenship, shot a six-under-par 65 on the third day to move up four places and sit one stroke better off than Englishman Tyrell Hatton and Bryson DeChambeau.
Hatton followed up his second-round 63 with a two-under-par 69 to remain tied in second place as bogeys at the fifth and ninth holes, plus a double bogey on the 12th, spoilt his card, which included six birdies.
Alongside Hatton is American DeChambeau, who climbed 19 places up the leaderboard after carding one bogey, seven birdies and an eagle-three on the last for an eight-under-par 63.
Hatton's Ryder Cup team-mate Justin Rose shot a one-under-par 70 and is tied in fourth place with 25-year-old Australian Cameron Smith. Both are two shots behind Ancer.
Argentina's Emiliano Grillo shot eight birdies and a bogey for a 64, which lifted him up 23 places into sixth alongside American Kyle Stanley, one stroke further back on 10 under.
Rory McIlroy moved up 13 places and is tied in eighth alongside Jordan Spieth, Tony Finau and American Beau Hossler after carding seven birdies and two bogeys in his third-round score of 66.
Watch the Dell Technologies Championship live on Sky Sports Golf.
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