Valencia have moved up to fourth place in the La Liga table with a narrow 1-0 victory at Getafe.
The decisive moment came just before the break when Jeremy Mathieu curled in a first-time shot from the edge of the area.
Ernesto Valverde's side could slip back down to fifth position if Real Sociedad win at Sevilla on Saturday night.
Meanwhile, the defeat has left Getafe in ninth place in the standings.