MADRID - Striker Walter Pandiani made the most of a goalkeeping blunder to give Osasuna a 1-0 win over Getafe on Thursday and take the Primera Liga strugglers through to the last 16 of the King's Cup. Osasuna are bottom of the league, having scored only three goals in 10 matches, and it took a disastrous mistake by Jacobo to help them find the net just after the half hour in Pamplona. Pandiani intercepted the Getafe keeper's weak pass out of defence and scrambled the ball into the empty net. Osasuna held on for a 1-0 aggregate win after the first leg in Madrid two weeks ago ended goalless and Getafe had Manu del Moral sent off in injury time. Segunda B (third tier) sides claimed two big scalps in Cup matches earlier this week. League champions Real Madrid were knocked out on the away goals rule by Real Union on Tuesday after they drew 6-6 on aggregate. Villarreal, second in the Primera Liga, followed Real out on Wednesday, losing 6-1 on aggregate to Poli Ejido. In Thursday's late Cup match, Sevilla host Segunda B side Ponferradina trailing 1-0 from the first leg.