Ross Fisher joined Thomas Pieters at the top of a star-studded leaderboard heading into the final day of the Abu Dhabi HSBC Championship, with Rory McIlroy their nearest rival.
A five-under round on Saturday had looked to be enough for Pieters to retain a one-shot lead at 17 under, but Fisher kept his cool to birdie the final hole for a 65 and reel the Belgian in.
McIlroy is a shot back after matching Fisher's seven-under score on the third day, despite finally recording his first bogey of the tournament at the 15th.
Tommy Fleetwood - the defending champion and last year's Race to Dubai winner - also remains in touch on 15 under alongside Matt Fitzpatrick, who made nine birdies in his first 12 holes on his way to a stunning 63.
It was a miserable day for Jorge Campillo, though, as he tumbled from second to joint 17th courtesy of a level-par 72.
After ending Saturday in a share of the lead, an upbeat Fisher said: "It was another good day. Obviously it's great fun getting out with Thomas; it's the third day in a row, a lot of fun, a lot of banter.
"I was just trying to hang on. I felt like I played solid. The conditions got very windy and 17 and 18 were playing very tough."
Pieters was satisfied with his play from tee to green, but said: "I missed a lot of putts today."