Veteran Miguel Angel Jimenez was one of three players to earn a share of the lead at the European Masters on Thursday.
The 53-year-old, already the oldest winner on the European Tour, shot a 64 to join Tyrrell Hatton and Scott Hend on six under at the picturesque Crans Montana course.
Spaniard Jimenez won this event in 2010 and Hend also has history here, having lost out to Alex Noren in a play-off last year.
Noren got round in level par, leaving himself with plenty of work to do to retain his title.
Hatton, meanwhile, appears to have rediscovered his game after enduring a run of six missed cuts at his last seven tournaments.
Co-leader Jimenez was pleased to get a low score in the bag to put himself in contention in Switzerland.
"Six-under-par 64 is amazing," he said. "I'm playing very well. I woke up very early this morning and got the profit of that. I'm playing solid, I'm feeling nice and motivated.
"The pin positions are very fair. In these conditions they are holding very well. It's not a very long course and they need to put up some kind of defence."
The leading trio have plenty of competition, with a group of six players just a stroke back and another five within two.
Lower down the leaderboard, Lee Westwood marked the start of his 500th European Tour event with a modest 71, while amateur duo Luca Denk and Hugo Rouillon endured miserable day as they signed for 82 apiece.
|F1 title will have to wait unless Vettel makes silly mistake – Hamilton|
|My goal was legal against Malaga, insists Barca´s Deulofeu|
|Newcastle overcome Bordeaux as Edinburgh make history in Moscow|
|Valverde does ´not see any problem´ with Suarez´s sour substitution reaction|
|Hamilton dominates in Austin as title moves into view|
|Ignore the noise, says under-fire Ozil|
|It´s like playing against aliens - Inter´s Spalletti hails Napoli players after draw|
|PSG duo Alves and Lucas to miss Marseille clash|
|CAF Champions League Review: Wydad Casablanca book final berth|
|Saracens survive Ospreys scare, Clermont win marred by Lopez injury|
|Getting there - Murray posts positive update on comeback from injury|
|Napoli 0 Inter 0: Handanovic heroics put an end to Partenopei´s winning streak|
|Barcelona 2 Malaga 0: Controversial win sees hosts extend LaLiga lead|
|Kvyat set for showdown talks with Red Bull boss Marko|
|Weidenfeller to end Dortmund stay at end of season|
|Pellegrino wants patience from Southampton saviour Boufal|
|Sad day for democracy - Guardiola gives latest take on Catalan crisis|
|Heynckes awaiting news on Muller injury|
|It was a penalty - Silva hits back at Burnley boss Dyche|
|Hamburg 0 Bayern Munich 1: Tolisso sends Heynckes´ men joint-top|
|Southampton 1 West Brom 0: Boufal stunner ends Saints´ winless run|
|Appleton still happy in caretaker role after Leicester sink Swansea|
|Guardiola ready to dine out on Aguero record|
|All Blacks squad safe despite Wallabies defeat - Hansen|
|They should do a press conference to explain – Mourinho furious with Manchester United players|
|Bosz bemoans dropped points after Dortmund let two-goal lead slip|
|Montella calls for courage against Genoa|
|Championship Review: Wolves stay top as Terry scores for Villa|
|One of my proudest moments – Wagner revels in Manchester United win|
|Dimitrov sets up Del Potro final as London spot edges closer|
|Damage was done in the first half, admits Hughes|
|Garcia moves into pole position at Valderrama|
|Conte will ´never´ fear the Chelsea sack|
|Herrera questions Manchester United´s ´passion´|
|Benitez impressed by Newcastle´s perseverance after narrow win|
|Hope stands alone as Zimbabwe skittle Windies on day one|
|Monaco 2 Caen 0: Keita opens account as hosts get back on track|
|A bad team deserves punishment – Mourinho blasts Manchester United display|
|Zidane rejects tag of ´world´s best coach´|
|Stoke City 1 Bournemouth 2: Howe´s men pick up first away points|
|Manchester City 3 Burnley 0: Aguero levels record as Guardiola´s men stretch lead|
|Swansea City 1 Leicester City 2: Mahrez shines as Appleton enjoys winning start|
|Newcastle 1 Crystal Palace 0: Merino leaves it late to sink Eagles|
|Huddersfield Town 2 Manchester United 1: Mourinho´s men suffer first defeat as Lindelof error proves|
|Eintracht Frankfurt 2 Borussia Dortmund 2: Bosz´s men stunned by comeback|
|Sri Lanka´s T20 squad depleted amid safety concerns|
|Double delight for Germany as Goerges and Witthoeft lift WTA titles|
|Immobile, Strakosha pen Lazio extensions|
|Beaten Read credits clinical Wallabies|
|Conte hails Chelsea´s ´desire to fight´ for Watford comeback|
|Aguero becomes joint-top scorer in Manchester City history|
|Chelsea hero Batshuayi relieved to end ´difficult moment´ against Watford|
|Verratti admits he had doubts over PSG project|
|Cheika sets sights high after All Blacks win|
|Bartomeu offers assurances over Barcelona´s LaLiga status|
|AC Milan will sell ´top players´ if they miss the Champions League|
|Chelsea 4 Watford 2: Batshuayi, Azpilicueta spare champions´ blushes|
|Darren Fletcher makes 100th consecutive Prermier League appearance|
|Carrasco´s attitude not a problem, says Simeone|
|Allegri happy to win ugly at Udinese|
|Barcelona approve €897million budget following record revenue in 2016-17|
|Lineker´s Benzema criticism embarrassing - Zidane hails Madrid striker as ´the best´|
|Bayern Munich announce record €640m turnover|
|Gasly denied chance of Super Formula title by typhoon|
|Australia claim long-awaited win over All Blacks|
|A-League Review: Brillante completes comeback in thrilling Sydney derby|
|Bakayoko starts for Chelsea against Watford|
|Not many teams can stop us scoring – Smalling hits back after United criticism|
|Halep relishing world number one battle in Singapore|
|Bakayoko: I´m not Chelsea´s new Matic|