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.
23 de septiembre 2017
|Dodgers slugger Bellinger breaks NL rookie HR record|
|Trump wants anthem protesters off the NFL field|
|Mourinho: Every Man United forward deserves to start|
|Saints CBs Lattimore, Moore to miss Panthers clash|
|Blue Jays burn Yankees with hidden-ball trick|
|Thomas aims to take chances at East Lake|
|Salah better than expected at Liverpool – Klopp|
|Wenger: Something will happen to regulate transfer fees|
|Ausmus won´t return as Tigers manager in 2018|
|Thomas surges to share lead with Casey, Simpson|
|Nadal and Berdych beaten in doubles but Europe dominate Laver Cup day one|
|Mourinho warns Shaw to work hard to regain Manchester United place|
|Ancelotti slams ´slow´ Bayern after Wolfsburg fightback|
22 de septiembre 2017
|Hull secure play-off spot and effectively end Wigan defence|
|Semedo, Deulofeu left out of Barcelona trip to Girona|
|Gloucester hold off fightback from winless Warriors|
|Conte urges Morata to show Costa aggression|
|Guardiola hopes Aguero breaks City record at home|
|Cheetahs end Leinster´s perfect start, Glasgow thrash Munster|
|Puig breaks fundraising goal for Puerto Rico hurricane relief in 24 hours|
|Paire saves match point to see off Goffin|
|Lille 0 Monaco 4: Falcao hits double as champions romp to win|
|Bayern Munich 2 Wolfsburg 2: Ulreich howler sparks shock comeback|
|De Biasi takes charge of Deportivo Alaves|
|Vikings QB Bradford to miss second straight game|
|Bertasio halfway to maiden professional win|
|Srna vows to clear ´name and reputation´ following doping claims|
|Neymar to miss PSG´s Montpellier clash|
|Tsonga shocked by Struff at St Petersburg Open|
|Costa can win many Atletico trophies, says ex-Chelsea striker Shevchenko|
|NFL plans to fight Aaron Hernandez lawsuit|
|From Maradona to Messi – Barcelona celebrate 60 years at Camp Nou|
|Shakespeare remaining upbeat over Silva saga|
|Alex Sandro replaces Marcelo in Brazil squad|
|Woods still taking recovery slowly despite progress|
|Returning Costa scared of Atletico fitness plans|
|Benevento captain Lucioni fails doping test|
|Valverde dismisses Real Madrid ´crisis´ talk|
|Stoke could have one fit centre-back for Chelsea game - Hughes|
|Zhang to face Krunic in Guangzhou final|
|Roland-Jones an Ashes doubt after suffering stress fracture|
|Bakayoko fit after car accident and Hazard ready to start, says Chelsea boss Conte|
|Rummenigge calls for transfer window to close on July 31 across Europe|
|Nigel Pearson appointed by Belgian side OH Leuven|
|Federer impressed at own longevity on 20th anniversary of rankings entry|
|Rossi returns as Pedrosa sets Aragon pace|
|UEFA inspector to examine disrupted clash between Arsenal and Cologne|
|Mourinho misses out as Allegri, Conte and Zidane battle for Best FIFA Coach of the Year|
|Conte encouraged by Musonda and Kenedy progress|
|Sri Lanka cricketers call for probe into Wickramasinghe allegations|
|Costa lands in Madrid ahead of Atletico return|
|Guardiola endorses Mourinho´s EFL Cup scepticism|
|Messi, Neymar and Ronaldo headline FIFA Best shortlist|
|Conte thanks Costa after Chelsea exit agreed|
|Zidane will not ´go crazy´ despite Real Madrid slump|
|Ruthless Muguruza and improving Kerber seal Tokyo semi-final spots|
|Aubameyang is very happy here, Bosz assures Dortmund fans|
|Madrid confirm Marcelo hamstring tear|
|I hope he doesn´t score! - Zizou wary of Enzo threat|
|Double for Slater as Storm seal Grand Final spot|
|Major players help teams grow - Simeone happy with selection headaches after Costa move|
|England to name Ashes squad on Wednesday|
|Allegri has faith in misfiring Higuain ahead of Turin derby|
|PSG must prove big-club credentials after spending spree - Draxler|
|Ostapenko strides into Korea Open semi-finals|
|Markram to make Proteas Test debut against Bangladesh|
|Not preventing Neymar´s Barca departure a ´bad decision´ - Rakitic|
|Shanghai Shenhua slam ´misleading´ French media over Tevez interview|
|Tentative Rossi back on track at Motorland|
|Teenager Smith named in England training squad|