Fourth-place Athletic crush Osasuna
Aritz Aduriz scored twice, taking the match away from the hosts with his side's second and third goals after Markel Susaeta's opener had been cancelled out by Emiliano Armenteros.
Osasuna were dealt another setback by the 76th-minute sending-off of Alejandro Arribas and Athletic took full advantage.
Substitutes Ibai and Enrique Sola struck late on as the visitors strengthened their hold on fourth place.
Jonathan Zongo's second-half header was all that separated the two sides as Miguel Moya pulled off many great saves to keep the scoreline respectable.
The win moves Francisco Rodriguez's side out of the danger zone while their opponents remain midtable following a disappointing run of just one win in their last seven league matches.