BERKELEY, Calif. (AP) -Star California tailback Jahvid Best has been carted off the field after he landed on the back of his head when he leapt more than 5 feet in the air and flipped over a defender to score a touchdown in the second quarter against Oregon State on Saturday night.

Best's helmet came off on impact. He vaulted into the air over safety Cameron Collins. Paramedics removed his jersey and Best was on oxygen when carted away.

The injury - with 6:07 before halftime - silenced Memorial Stadium, where fans chanted ``Jahvid! Jahvid!'' before everything went quiet. His teammates went down on their knees and waited, then moved to the end zone as trainers and doctors took him away on a stretcher. The game was delayed 13 minutes.

Best has 16 touchdowns and 867 rushing yards this season for the 23rd-ranked Golden Bears.