After a fast start by Osasuna at El Sadar, it was Valencia who went in front with just 15 minutes on the clock.
It all started on the right flank where Kevin Gameiro showed some brilliance and put a cross into the six yard box.
Rodrigo Moreno was waiting at the far stick and he tapped home into an empty net to gave Valencia the lead.
But less than 15 minutes later, he was given his marching orders after catching Pervis in the face with his elbow. The referee was in no doubt and gave him a straight red card.