American defender Oguchi Onyewu came out with an apparent back injury in the 26th minute of FC Twente's Dutch Cup quarterfinal against PSV Eindhoven on Wednesday night.

Onyewu was playing his third competitive match for the club. The 28-year-old made Dutch debut in a league match against Heracles Almelo on Jan. 19 after he was loaned from AC Milan, then played Sunday against Groningen.

Twente won 7-6 on penalty kicks following a 1-1 tie to advance to the semifinals, and Utrecht beat Groningen 3-2.