Sproles left concussed by McClain's violent hit

                 SAN DIEGO -- San Diego fans booed loudly after no penalty was called on a helmet-to-helmet hit that left Chargers RB Darren Sproles with a concussion. But referee John Parry said the no-call was precisely in keeping with the rules.

                 The play occurred late in the second quarter of the Oakland Raiders' 28-13 win over the Chargers Sunday.Sproles was hit by rookie LB Rolando McClain after a 7-yard reception. Sproles was attended to on the field while the fans booed. He got to his feet and walked off, but he did not return to the game.

                 Parry said no penalty was called because Sproles had taken at least three steps after the catch and was no longer considered a "defenseless" receiver."You can't hit helmet-to-helmet on a defenseless player," said Parry. "He was not considered defenseless. He was considered a runner because the act of possession was complete. The minimum of three steps were taken, so he was not deemed to be a runner so helmet-to-helmet is legal."

                 Chargers coach Norv Turner said of the call: "I didn't get a good look at it. The guy (McClain) is playing football, and he came in there. The big emphasis to me is defenseless players. The quick look I had on it … I didn't seem him (Sproles) as being a defenseless player."Sproles' status moving forward?"Darren is going to be fine," said Turner. "He couldn't return in the game, but he's in there now (in the locker room), and he's doing good."