Neil Critchley’s side had recovered from an early concession in the Premier League 2 clash to quickly level via the penalty spot, Rhian Brewster dispatching from 12 yards.
But the visitors got back in front with a spot-kick of their own on the stroke of half-time and moved into a stronger lead with a third moments into the second half. Adrian Bernabe assured three points with a fourth late on.
It was a special occasion for several of the young Reds as they ran out onto the turf at the first-team stadium, while Jürgen Klopp’s seniors were simultaneously winning 3-0 at Burnley.