Coleg Sir Gar staged a superb fightback to beat Coleg y Cymoedd 25-22 in the WRU Wednesday League final at the Millennium Stadium.
It was a rematch of last year's final, and having lost only one game all year and having a squad full of Welsh Under-18 internationals, Cymoedd went in to the game as firm favourites.
The Steelers suffered a nightmare start with Cymoedd scoring off their first attack to go 7-0 ahead.
Coleg Sir Gâr reacted well and managed to control territory and possession, but resolute Cymoedd defence limited the Steelers to a penalty from Daniel Jones.
Cymoedd always looked dangerous with ball in hand and they scored two quick tries to gave them a 19-3 lead.
This, combined with the loss of influential captain Tom Phillips through injury, made Sir Gar's challenge to retain the trophy a mammoth task.
They needed to score before the break to get back in the game, and with the very last play of the half, the forwards took control and from a driving line-out Shaun Evans powered his way over the line. Jones converted from the touchline to make the score at the interval 19-10.
The first score of the second half fell to the Cymoedd with a penalty.
Sir Gâr started to play with more confidence and with half-backs Kieran Hardy and Jones controlling matters, the Steelers started to play with direction and penetrate the opposition defence.
Again it was the forwards who led the way with a powerful driving line-out giving Shaun Evans his second try.
This gave Sir Gâr a real lift and soon powerful wing Ryan Nunes burst through some tired defence to score in the corner to tie the game at 22-all.
Momentum was now with Sir Gâr and Cymoedd ill-discipline gave fly-half Jones the a chance to win it. With nerves of steel he kicked a penalty to complete the comeback.
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.