Osasuna's European hopes have been dealt a blow with a 2-0 defeat at Sevilla.
The hosts took the lead after 15 minutes when Gary Medel's low drive found the bottom corner.
Alvaro Negredo could have doubled his side's lead before the break, but the striker was thwarted by the goalkeeper on both occasions.
Francisco Punal had a good opportunity to draw Osasuna level just before the hour, but he was off target following a counter-attack.
Ivan Rakitic saw his effort fly wide for the away side, while Roland Lamah's strike was saved by Andres Palop in the Sevilla goal.
The win was sealed in injury time as Piotr Trochowski met Jesus Navas' cross to flick in from eight yards.
