Sergio Garcia shot one of golf's most remarkable course records in Dubai - two eagles, nine birdies, two bogeys and a triple bogey seven.
It all added up to a second round 64, eight under par, at the DP World Tour Championship and from 49th place overnight he was back in contention.
The scoring was astonishing enough, but this is the 32 year old Spaniard's first event since the Ryder Cup in September. He underwent laser surgery afterwards to correct an astigmatic eye.
"It was unbelievable, wasn't it? he said after moving from one over par to seven under.
An 18 foot eagle putt from just off the back of the final green made Garcia the sixth player to hand in a 64 on the Greg Norman-designed Earth Course, venue for The European Tour's season-ending showpiece for the past four years.
"I'm still kind of getting used to it," he said of his improved eyesight.
"My sight's not changed immensely, but the main reason was that with contact lenses I was feeling very uncomfortable."
He had five birdies in an outward 31, started for home with two more, bogeyed the next two, then sank a 30 foot eagle putt on the long 14th.
The tee at the 371 yard 15th had been moved up and after driving the green he sank an eight foot second putt for birdie, but then pushed an eight iron into the water on the next.
With three putts a triple bogey went on his card, but he hit back with a six iron to four feet and then had his closing eagle - after his drive had headed for the stream running down the fairway, but then hit the rocks and bounced out.
Moments earlier German Marcel Siem had hit his second shot into the water by the green and by taking a bogey six had to settle for a 65.