Sociedad, Sevilla reach Copa del Rey QFs

Real Sociedad have extended their impressive winning streak by defeating Mallorca 1-0 to advance to the quarter-finals of the Copa del Rey.

Robert Navarro scored in the fifth minute to give Sociedad their eighth straight win in all competitions.

Sitting third in La Liga, Sociedad have reached the last eight of the Copa for the second consecutive season.

Spain under-21 international Navarro, 20, has now scored in four successive Copa ties.

"We suffered, but it was a well-deserved victory," Sociedad coach Imanol Alguacil said.

Sociedad's last game without a win was a 1-1 league draw against Valencia at home on November 6.

Elsewhere, Ivan Rakitic scored his first goal of the season to help Sevilla advance to the quarter-finals with a 1-0 win at second division Alaves.

Rakitic scored the winner with a diving header from near the penalty spot after a cross by Jesus Navas in the 48th minute.