Loren Moron put Betis ahead on the stroke of half-time and Valencia were left with a tall task when goalkeeper Jaume Domenech allowed veteran winger Joaquin to score direct from a corner.

Head coach Marcelino responded by sending on Gameiro and the French striker crossed for Denis Cheryshev to head Los Che back into the tie.

Then, in stoppage time, Gameiro slid in a second – and potentially crucial – away goal from Rodrigo Moreno's cutback.