Barcelona defender Gerard Pique was set to remain in a hospital overnight Tuesday after being knocked unconscious during the 2-2 Champions League draw against Chelsea on Tuesday.

Pique exited the match at the Camp Nou in the 25th minute, nine minutes after colliding with teammate Victor Valdes as the pair went to clear a long ball from the chasing Didier Drogba.

Pique laid motionless for some time before eventually getting to his feet and playing. Barcelona said the Spain international suffered a light concussion and was being kept overnight as a precaution after undergoing medical tests.

Defending champion Barcelona failed to reach its third final in four seasons after 10-man Chelsea advanced 3-2 on aggregate. -Sapa