Chinese schoolboy Guan Tianlang rocked the golfing world on Friday by making the cut at the 77th Masters despite being penalised one shot for slow play in the second round.
But he needed to endure an agonising wait of several hours until the final grouping came in to be sure that he had survived.
The 14-year-old from Guangzhou, who is the youngest player in Masters history, was sanctioned as he played the 17th hole.
That meant he came in with a three-over par 75 and stood at four-over 148 after 36 holes.
Making the cut were the top 50 and level plus all players within 10 strokes and with the halfway lead later established at six-under 138, Guan was safely through, right on the limit, to play at the weekend.
He will be the youngest to play Saturday and Sunday at the Masters and he is the first player from mainland China to make the cut in the year’s first major.
Guan is also certain to win the Silver Cup, which goes to the top amateur who completes 72 holes, as his five amateur rivals all failed to make the cut.
The Asian prodigy became the youngest player in the history of the Masters on Thursday when he carded a one-over 73 that included four birdies and five bogeys.
On Friday, he dropped two shots at the fourth and seventh, as heavy rain fell on Augusta National, to reach the turn in 38.
But with the weather brightening, he then calmly picked his way around the fearful Amen Corner – holes 11, 12 and 13 – without dropping a stroke.
He was parring his way in from there when referee John Paramor walked onto the course after Guan had played his second shot and informed him of the penalty sanction, having warned him already on the 13th hole.
“I played pretty good today,” said Guan speaking after his round, but before he knew he had made the cut. “I know the rules pretty good. This is what they can do.”
Guan became the first player punished for slow play in a major since Frenchman Gregory Bourdy at the 2010 PGA Championship.
“This still is a wonderful experience for me,” Guan said. “I have enjoyed playing in the Masters and I think I did a pretty good job.”
Playing partner Matteo Manassero said he had sympathy with Guan given the gusting winds that affected Augusta National on Friday, but he agreed that the Chinese youngster had been slow to play.
“I think it’s the biggest thing he needs to be careful about, because I think he’s ready,” the Italian said.
“This certainly will be a very valuable lesson. He will never forget it for sure, and he will learn from it.”
The leader at the halfway stage, Australian Justin Day, said he had been unaware that he could have eliminated Guan had he birdied one of the last two holes as that would have nudged him out of the 10-stroke zone.
Making the cut at such a high-pressure tournament at the age of 14 was beyond belief, he added.
“Obviously he’s got a boatload of talent,” Day said.
“It’s unfortunate that he received the penalty, but he can learn from that and move on and hopefully can play well over the next two days.”
The two previous Chinese players to compete in the Masters, Zhang Lianwei in 2004 and Liang Wenchang in 2008, both failed to make the cut.
Guan will go out early on Saturday morning in the company of rising Danish star Thorbjorn Olesen.