Villarreal did enough to defeat Real Mallorca 1-0 on Tuesday night.
Both sides had clear chances that were not always taken, and it was only some brilliance from Samu Chukwueze that allowed Carlos Bacca to fire home from close range in the 15th minute.
The Nigerian came in from the right-hand side and the Mallorca defenders were perilous to stop him, as he sent a left-footed cross towards the back home for the Colombian to poke home.
Fifteen year-old Luka Romero remained on Mallorca's bench for the game.
For Mallorca, they now have a vital match at home to Leganes on Friday match, with both sides currently 18th and 20th respectively.
Villarreal, meanwhile, keep their European hopes alive, sitting seventh on 44 points.