Greg Denton, 15, was two over par around the famous links course at Southport, delighting his mum Lesley.
She told the Guardian: “We’re extremely proud of him, it was just what he needed.”
“Sometimes they plod along with good and bad rounds, so it’s nice for him to get a great result, it shows him that he can do it.”
“It was a great day for him.”
Heritage High School student Denton picked up a £200 golf voucher, a silver medal and the trophy, which will remain at Royal Birkdale.