Scott Hend carded a superb 63 to surge into the lead of the European Masters at the halfway stage, while Darren Fichardt matched his score for the round to sit one stroke adrift.
The Australian suffered heartbreak as he lost in a play-off with Alex Noren in Crans Montana last year, but he is brilliantly placed to make up for that disappointment this time around.
Hend held a share of the overnight lead with Miguel Angel Jimenez and Tyrrell Hatton but, while he went from strength to strength, Jimenez and Hatton both faltered.
Jimenez dropped back to three-under-par with a three-over 73, while a 71 for Hatton saw him fall to five under.
Hend, though, gained seven strokes in a flawless round to lead Fichardt - who also carded a 63 - by one stroke.
A magnificent tee shot to three feet helped Hend to an eagle at the seventh, before he made the turn in 32 after a birdie at the ninth. He then finished in spectacular fashion with four birdies in the final five holes.
Hend's performance came despite the significant distraction of having his children home in Florida, where Hurricane Irma is set to land.
The 44-year-old, whose wife is serving as his caddie in Switzerland, said: "We're a bit worried about the kids in Florida with the sitter at the moment.
"We've been up late at night trying to find out contingency plans. I think they're going to get out of there. It's not worth the risk."
Fichardt matched Hend's round with five birdies and an eagle, which came at the 15th, as the South African followed up his opening round 65 in style.
Thongchai Jaidee, Fabrizio Zanotti and Todd Sinnott are all four strokes back on nine under, with Matthew Fitzpatrick five off the pace along with Julian Suri and Ryan Fox.
Defending champion Noren improved on his level-par round one with a three-under 67 but still has plenty of ground to make up to have any hope of retaining the title.
Lee Westwood, making his 500th European Tour appearance, made the cut thanks to three birdies in the final five holes having been one over after 12.
World number 16 Tommy Fleetwood did not make the cut, however, his level-par round not enough, the Englishman having carded a 72 a day earlier.
18 de febrero 2018
|Inter in a fragile moment, says Spalletti|
|Groves batters Eubank Jr to retain WBA crown|
|Montpellier see off plucky Oyonnax, Ashton stars in Stade mauling|
|Booed Emery praises PSG´s mental strength|
17 de febrero 2018
|Cavani hails ´good reaction´ as PSG bounce back in style|
|Thiem breezes past Monfils to set up Bedene showdown|
|Mourinho wants referees to have final say on VAR|
|Genoa 2 Inter 0: Pandev piles misery on old employers|
|Manchester United to host Brighton in FA Cup quarter-finals|
|Leinster see off Scarlets as Munster come up short in Cardiff|
|New No.1 Federer earns gritty Seppi win to book Rotterdam final|
|Mata ´still up for VAR´ despite disallowed goal at Huddersfield|
|Valverde: Barcelona had to suffer at Eibar|
|Championship Review: Fulham end Villa run, Cardiff pounce|
|Resilient Kvitova ousts Wozniacki in Doha thriller|
|Huddersfield Town 0 Manchester United 2: Lukaku sends visitors through after VAR controversy|
|Toomua inspires Tigers win over Quins, Worcester beat Gloucester|
|Bayern Munich boss Heynckes hails game-changing Muller|
|Locadia benefiting from ´competitive´ Brighton - Hughton|
|Baby on board? Alba dedicates Barca goal to girlfriend|
|West Brom future ´not a decision for me´, says Pardew|
|Lions get De Bruin off to winning start|
|Paris Saint-Germain 5 Strasbourg 2: Cavani at the double in bounce-back win|
|Bar-celona! Messi posts unwanted record|
|Barca go 31 LaLiga games unbeaten to tie club record|
|Mourinho: I don´t know and I don´t care when Pogba returns|
|Brighton and Hove Albion 3 Coventry City 1: Locadia, Ulloa lead Seagulls to quarter-finals|
|EIbar 0 Barcelona 2: Suarez and Alba seal points as Orellana sees red|
|West Brom 1 Southampton 2: Rondon stunner in vain as Baggies drop out|
|Wolfsburg 1 Bayern Munich 2: Lewandowski spot-on after Robben´s penalty miss|
|I hope Cutrone finds a beautiful girlfriend so he can rest and make love - Gattuso|
|Wellens claims Ruta del Sol lead, Froome suffers puncture|
|Goffin forced to retire in Rotterdam following freak eye injury|
|Allegri denies Champions League ´obsession´ ahead of Turin derby|
|Barry, Evans start for West Brom after training camp incident|
|Bottas unaffected by ´Halo´ on simulation runs|
|Sheffield Wednesday 0 Swansea City 0: Carvalhal settles for replay on Hillsborough return|
|Management ´tiring´ but Zidane not ready to leave Madrid just yet|
|Thiago back for Bayern as Heynckes rests stars for Besiktas|
|Simeone urges Atletico fans to get behind Griezmann|
|Robben amazed by Guardiola´s impact at Manchester City|
|Three-way tie for lead in Oman as Pavon falls away|
|McIlroy frustrated by added scrutiny of playing with Woods|
|Morgan to take it slow with Stokes and backs Rashid|
|Pogba out of Man Utd´s Huddersfield trip with illness|
|A-League Review: Perth ´Panenka´ punished, 10-man Adelaide rescue late draw|
|Dragons and Rabbitohs see off Super League opponents|
|Robben targets two more years at the ´highest level´|
|Rashford and Herrera ´have a chance´ of making Sevilla trip|
|Mixed feelings for Tiger Woods after missed cut at Riviera|
|Emery defends PSG star Neymar after Madrid display|
|Nishikori stays hot in New York as Anderson awaits|
|Kevin Durant: Laura Ingraham´s ignorant comment was racist|
|Thiem sets up Monfils semi-final showdown|
|Mahrez saga now over, says Leicester boss Puel|
|Cantlay, McDowell and Saunders top at Riviera as Woods makes early exit|
|Tiger Woods misses cut at Genesis Open|
|Astros manager Hinch on Cole: He doesn´t need to be fixed|
|Alonso to return for Barca clash but Bakayoko set to miss first leg – Conte|
|Mourinho: Manchester United will sign a midfielder|
|Record-breaking Federer rises back to summit, Goffin to meet Dimitrov|
|Kobe Bryant says Lakers ´shouldn´t need´ to recruit free agents|
|Federer pokes fun at himself after becoming oldest world number one|
|Woods to play Honda Classic as comeback continues|
|Glasgow Warriors book finals berth as Zebre upset Connacht|
16 de febrero 2018
|Conte given selection headache ahead of Barcelona clash|
|Atkins at the double as Warrington see off Widnes|
|Giroud ´relieved´ to get first Chelsea goal|
|Sarries scrap for Sale success|
|Records tumble in Federer´s latest remarkable ascent to the top|