Oliver Fisher was thrilled to shoot the first 59 in European Tour history, two years on from saving his card at the same venue.
At the 2016 Portugal Masters, Fisher managed to finish in a tie for 10th to secure his future on the Tour, but Friday's achievement was all the more spectacular.
The Englishman, ranked 287th in the world, carded 10 birdies and an eagle to finish 12 under for his second round and propel himself into the clubhouse lead at Vilamoura.
Having signed for an even-par 71 on day one, Fisher was ecstatic to be able to share his record-breaking moment with those close to him.
That scorecard... pic.twitter.com/WhTiXd65Va— 59 on the European Tour (@EuropeanTour) September 21, 2018
"I'm lucky, really lucky that my fiancee is here and there's so many friends around," he told Sky Sports.
"You don't really realise it when you're out there, but coming off there, seeing everyone is an amazing feeling.
"That day [in 2016] was a really tough day in the circumstances. Coming to the end of the round there's a lot of water, it's make or break, that day I birdied 17 and 18 and was elated.
"I've done it before under different circumstances, today the weather's lovely and really nice, it's a special moment.
"It's very different [chasing 59 instead of a win]. It's not that often you get to shoot a really low one. I was just grateful I hit two good drives on those two holes, 17 and 18 are all about tee shots on this course, thankfully I hit the fairways and gave myself a chance."
Fisher last and only European Tour win came back in 2011, but the 30-year-old will not be concerning himself with thoughts of victory with two rounds still to come.
"I've not really looked at the leaderboard all day, which I think is a good thing," he said.
"I just tried to stay in the moment, keep thinking about the shot that's happening right now. Over the weekend it'll be much of that again."
|Clash with ultras, stripped of captaincy - a timeline of Icardi´s fractured Inter relationship|
|Ospina will remain at Napoli next season, says Ancelotti|
|Antetokounmpo shines, Nowitzki and Wade can still play – takeaways from NBA All-Star Game|
|Top highlights from Team LeBron´s victory over Team Giannis in NBA All-Star Game|
|Durant earns All-Star Game MVP honours|
|Team LeBron rally past Team Giannis|
|PSG can reach Champions League final without Neymar – Cafu|
|Holmes edges out Thomas to win fifth PGA Tour event|
|Hamlin wins crash-filled Daytona 500|
|Marotta: Inter have never doubted Icardi|
|Guardiola was questioned too – Zola says Sarri needs time|
|Icardi has no intention to leave Inter - Nara|
|Tuchel hails ´exceptional´ PSG mentality|
|Mbappe: PSG team better than my goals record|
|Opelka claims maiden ATP title in New York|
|Mbappe makes Ligue 1 history with wonderful volley|
|Saudi takeover of Manchester United dismissed|
|Stroman unhappy with Blue Jays´ lack of veteran leadership|
|Sanchez is far from finished at the top level, insists Solskjaer|
|Giggs: Give Man United job to Solskjaer|
|Robinson hails Morris´ ´special´ Roosters debut|
|Saint-Etienne 0 Paris Saint-Germain 1: Magical Mbappe snatches the points|
|Morris: I showed Roosters team-mates what I can do|
|Morris´ debut hat-trick guides Roosters to World Club Challenge glory|
|Icardi did not celebrate Inter win in dressing room, says Spalletti|
|Can: No privileges at Juventus, even for Ronaldo|
|Crusaders coach Robertson signs on for two more seasons|
|20-0 farce slammed as ´insult to sport´ by Italian football chief|
|Messi makes playing for Barcelona easier - Dembele|
|Alisson: Liverpool won´t feel Van Dijk loss against Bayern|
|SPAL coach Semplici left frustrated by VAR controversy|
|Jose Mourinho open to Ligue 1 job|
|Inter 2 Sampdoria 1: Nainggolan salvages win in Icardi´s absence|
|Muguruza and Kasatkina battle their way into Dubai second round|
|Cecchinato hammers home favourite Schwartzman to win Argentina Open|
|Toulouse resist Racing fightback to reclaim top spot|
|Icardi contract talks continue despite losing Inter captaincy|
|Halep ends Van Cleemput collaboration|
|Swansea City 4 Brentford 1: James-inspired turnaround books quarter-final berth|
|Doncaster Rovers 0 Crystal Palace 2: Eagles ease into FA Cup´s last eight|
|Windies star Gayle to retire from ODIs after World Cup|
|Wenger backs Henry to bounce back|
|20-0! Seven-man crisis club Pro Piacenza thrashed in Serie C farce|
|Monfils holds off Wawrinka for Rotterdam title|
|Walker hat-trick gets Rhinos up and running|
|Ramos red card an ´occupational hazard´, says Solari|
|Dan Carter to make Racing 92 return|
|Ashton ruled out for Wales clash|
|Nuno hails cup win as ´moment of joy´|
|Marcelo v Reguilon: Real Madrid mainstay losing left-back battle|
|Marcelo is an institution - Eusebio denies targeting Real Madrid left-back|
|I´d rather surround myself with people I really like - Osaka explains coach split|
|We do not have to kill Real Madrid forever - Odriozola|
|Bristol City 0 Wolves 1: Cavaleiro repeats cup heroics|
|Blackburn Rovers 0 Middlesbrough 1: Assombalonga strengthens Boro´s play-off credentials|
|Coman restricted to light training ahead of Liverpool clash|
|Solari refuses to concede LaLiga title race is over|
|Courtois: Real Madrid could not control Girona|
|Weary Kvitova reflects on ´crushing´ start to 2019|
|Umtiti in Barcelona squad to face former club Lyon|
|It´s hard to take - Maxwell laments Stars´ stunning Big Bash defeat|
|Pogba: Manchester United emulating ´Class of 92´|
|Real Madrid 1 Girona 2: Stuani and Portu seal stunning comeback|
|Boult, Mahmudullah fined by ICC|
|Neymar Senior: No chance of PSG star facing Manchester United|
|Broad expects sledging to subside in 2019 Ashes|
|Aguero targets historic quadruple|
|Scholes backs Solskjaer for Man United job|
|Finch hails ´special´ Renegades comeback|
|Sydney FC 1 Central Coast Mariners 1: Le Fondre strike averts shock defeat|