Oliver Fisher reeled off four consecutive birdies at the end of his third round to claim a share of the lead at the Qatar Masters.
The Englishman signed for a superb 65 on Saturday to sit level with compatriot Eddie Pepperell on 16 under, with American Sean Crocker two strokes back and representing the duo's closest challenger.
David Horsey started with an eagle en route to matching Fisher's score for the day, leaving him four adrift, while overnight leader Adrian Otaegui's one-over-par effort left him six back.
Final-hole birdies for both Fisher and Pepperell highlighted their coolness under pressure in Doha, while a solitary bogey apiece underlined their consistency.
Finishing in style.— The European Tour (@EuropeanTour) February 24, 2018
Oli Fisher's 65 hands him the lead in Qatar. pic.twitter.com/9qIVlVAQaO
Pepperell is seeking a maiden European Tour win, while Fisher's sole success came at the 2011 Czech Open.
"I would say that was my best round, especially with the position I was in going into the day," said Pepperell.
"I hit a lot of good shots, I maybe lost a little feeling through the turn, but I bounced back nicely and I didn't let it bother me.
"My whole game feels like it's there. Mentally I feel like I'm up for it – I wanted to lead today and I didn't want to be behind the leader."
A host of hopefuls will need to shoot low on Sunday to topple the top two, with Andrea Pavan, Lorenzo Gagli, Marcus Kinhult and Gregory Havret on 12 under.
At the wrong end of the standings, Pontus Widegren endured a day to forget as he carded an 80 – 13 strokes worse than his second-round total.
The 27-year-old Swede took nine strokes on the par-five ninth hole.
23 de junio 2018
|Marquez asks Mexico fans to ´let them rest´|
|Fabregas hopeful of Spain recall|
|Milinkovic-Savic plays down Juventus speculation|
|Rashford inspired by Ronaldo|
|Messi is not a leader, he is no Ronaldo, claims Petit|
|Better than Ballack? Hodgson backs Loftus-Cheek to shine against Panama|
|Svitolina and Garcia suffer upsets|
22 de junio 2018
|Walker responds to Ferdinand criticism|
|Djokovic still hungry for more after reaching major milestone|
|Ellis drop goal earns Castleford dramatic win|
|Nigeria hero Musa unsure on Leicester City future|
|X marks the spot - Granit´s rocket sets World Cup first|
|Xhaka and Shaqiri follow the script as Serbia are derailed|
|Chandimal appeal against ban rejected|
|Real Madrid sign teenage goalkeeper Lunin|
|Serbia 1 Switzerland 2: Shaqiri strikes late to clinch crucial comeback victory|
|Suspended Srna joins Serie A side Cagliari|
|Cilic sets up Kyrgios showdown as Djokovic reaches milestone|
|Kudla up next in Federer´s Halle ´fight´|
|Assistant Farbrace to take charge of England for T20 games|
|Hummels hoping to be fit for Sweden clash|
|Hend surges clear as Fleetwood struggles again in Pulheim|
|Giant-killers Mexico embrace sudden weight of expectation|
|Roma complete €17.25m Kluivert deal|
|Pakistan name strong group for Zimbabwe tour|
|Choc Horror: Boullier insists McLaren do not hand out Freddos as bonuses|
|Neymar: Not everyone knows what I went through|
|Poland v Colombia: No time to dwell on regrets, warns Aguilar|
|Musa shows Messi how it´s done to set up critical Argentina showdown|
|Nigeria 2 Iceland 0: Musa brace boosts Super Eagles & Argentina|
|McLaren and Renault open to Ricciardo talks|
|We must win, we have no other choice - Maaloul|
|Germany will respond against Sweden, insists Low|
|´The best among all Asians´, South Korea trust in Son against Mexico|
|Stalin´s bunker an unlikely site for Russia´s World Cup charm offensive|
|England v Panama: Rashford tipped to start as Southgate´s side aim for last 16|
|Erasmus wary of ´wonderful´ Cipriani|
|Hummels to miss Germany-Sweden, confirms Low|
|Murray accepts Eastbourne wildcard|
|St Petersburg madness lines up Neymar and Brazil with heroes of the past|
|Martinez happy to be ´boring Belgium´|
|Japan v Senegal: Squeaky clean Group H rivals eyeing huge step towards last 16|
|Argentina team the worst in history - Ardiles|
|Ravanelli upsets wife by taking Arsenal job...in Kiev|
|Federer moves a step closer to 10th title in Halle|
|Brazil 2 Costa Rica 0: Coutinho and Neymar score in stoppage time to snatch win|
|Andersson: Sweden embracing big occasion as bug sweeps through team|
|LeBron in ´good dialogue´ with Cavaliers|
|Ronaldo will always be the best, Fonte claims|
|Southgate criticises press for England team leak|
|O´Mahony: Series win in Australia would be up there with Grand Slam|
|Khedira thrilled with Can capture, staying with Juventus|
|Samuel open to Higuain-Icardi swap deal|
|It´s just a game - Milligan disappointed by Kruse criticism|
|From drug-testing lab to gastro pub: Sochi happy not to forget dark past|
|Ronaldo will do what is best for him, says Carvajal|
|Kohli: India will feel at home in England|
|Barca target Lenglet yet to decide future|
|Germany perform best under pressure, Klose claims|
|Juanfran signs one-year Atletico Madrid extension|
|Julian Nagelsmann: The remarkable rise of RB Leipzig|
|Sterling: my daughter is Liverpool through and through!|
|Van Bommel to take charge of PSV|
|Hansen urges France not to ´squeal´ over decisions|
|Intelligent Jones will turn England´s fortunes around - Moody|
|Nainggolan confirms imminent Inter transfer|
|U.S. Open missed cut may be blessing in disguise - McIlroy|
|Schmidt in no rush to decide on his future|
|Wallabies treating decider as grand final - Hooper|
|Salah won´t leave World Cup, Egypt FA boss claims|