Academy coach John Owens sent out a strong side last night with last season's winners David Roberts, Stephen Darby, Robbie Threlfall, Ryan Flynn, Jay Spearing and Craig Lindfield all in the starting line up.
It was Robbie Threlfall, who gave the Reds the lead in last season's final against Man City, who opened the scoring last night when he put the Reds in front after only a minute.
Ryan Wignall sent in a cross after Liverpool won a corner and Threlfall was on hand to head home the opening goal.
It was 1-1 25 minutes later when West Brom's constant pressure paid off and they were able to take advantage of a poor clearance to slot home the equaliser.
It was all Liverpool in the second half however, and the Reds should have wrapped the game up in normal time but the under 18's have struggled in front of goal this season and it was the same story tonight.
Ray Putterill, captain Jay Spearing and Lee Woodward all came close to winning it for Liverpool in normal time but a combination of good goalkeeping and some bad misses meant the game went into extra time.
A mere two minutes of extra time had been played when the Reds got their deserved winner. Ray Putterill buried an excellent strike from twenty yardsto restore Liverpool's lead and after that they never looked like slipping up.