OAKLAND -- Warriors rookie forward Harrison Barnes sustained a head injury late in the first half of Thursday's playoff game against the San Antonio Spurs.

Barnes required six stitches for a laceration over his right eye, and he was back on the court to start the second half.

The injury occurred when went up to contest a shot and had a collision with San Antonio big man Boris Diaw. Barnes went down immediately in visible pain with 1:15 left in the second quarter. Point guard Stephen Curry immediately gestured for the trainer to come onto the court.

Barnes had a cut above his right eye and was bleeding. Replays showed he might have banged his head on the court. After several minutes, he walked off on his own power but bleeding. he went straight to the locker room.

Golden State Warriors’ Harrison Barnes (40) gets an injury in the second quarter of their Game 6 of the NBA second-round playoff series against the
Golden State Warriors' Harrison Barnes (40) gets an injury in the second quarter of their Game 6 of the NBA second-round playoff series against the San Antonio Spurs held at Oracle Arena in Oakland, Calif., on Friday, May 16, 2013. (Doug Duran/Bay Area News Group)

Barnes had eight points and two rebounds in 19 first-half minutes

Check back for more details on this developing story.