Alejandro Del Rey made history as he carded a sensational record-breaking 14-under par round of 58 at the Swiss Challenge on Friday.
The Spaniard was in danger of missing the cut before signing for the lowest score to par on a major golf tour.
Del Rey made three eagles and eight birdies at Golf Saint Apollinaire, surging up the leaderboard to put himself in contention for the title a day after he went round in 74.
The 23-year-old joins Jim Furyk, Stephan Jager, Ryo Ishikawa and Kim Seong-hyeon as the only golfers to have carded a 58 on major tours, with that quartet having achieved the feat with 12-under rounds on par-70 courses.
Del Rey said: "I really enjoyed it, it (the course) suits my game pretty well. I think the key for me is trying to stay patient out there, I am going to have a lot of putts for birdie, I let myself go a little bit yesterday and missed a lot of them.
"I just did pretty well today when I dropped the first couple and I stayed pretty patient when I missed a couple again, then I just went back at it.
"It was just great golf all round and for a round like that you need a couple of good bounces, which I got today. I definitely managed to drop some putts out there, but I think the key was that my driving was just great today. I hit every fairway super deep and every hole I managed to hit wedges in and managed to hit some chips, it was just a great all-round golf performance."
After his stunning score, Del Rey accepts that he will have to start afresh in round three, albeit he has catapulted himself into contention.
"I should take a nap because I need it, but I don’t know if I am going to be able to take a nap right now because I'm pretty pumped," he added.
"Tomorrow is a whole new day, and that's golf, I shot a 74 yesterday which is kind of crazy, so it's just another round. I'm just going to go out there and shoot as low as possible."