The young Reds surrendered a 3-1 lead to go into the closing stages 4-3 down, but Gomes struck his second goal late on to ensure Mike Garrity and Tim Jenkins’ team made it three games without defeat during Premier League 2’s mid-season break.
Sheyi Ojo’s third goal in his last four appearances put Liverpool ahead early on, and the hosts appeared set for a comfortable victory when excellent finishes from Gomes and captain Harry Wilson put them 3-1 up following Wigan’s equaliser.
However, the Latics responded superbly, pulling one back before the break and then scoring twice from set-pieces in the second half to go in front.