Rhys McClenaghan in Year 12 clinched a superb bronze medal behind Max Whitlock and Louis Smith at the British Championships in Liverpool on Sunday.
Rhys, finished behind the Olympic and world medallists in the pommel horse event.
"What the heck just happened?" said Rhys on Twitter.
"I just shared the podium with Louis Smith and Max Whitlock."
Rhys added:"There's nobody happier than I am now."
Rhys’s pommel horse score of 15.175 is one of the highest ever produced by a junior.