SAN DIEGO - Chargers wide receiver Malcom Floyd strained his right knee in a collision with cornerback Shareece Wright during practice on Monday.

The team confirmed the injury on Monday night, but didn't release any other details. It's believed the injury isn't as serious as the one that sidelined the team's other starter, Danario Alexander, for the season.

Alexander tore the anterior cruciate ligament in his right knee after he collided with Wright last Tuesday.

Floyd, taken off the field in a cart, had an MRI exam Monday evening.

Rookie linebacker Manti Te'o said his sprained right foot is better, but he won't play Thursday at Chicago.

Extra points

• Kansas City running back Jamaal Charles gave Chiefs fans and fantasy football fans a scare when he injured his right foot Monday. But it turned out to be a strained foot, and X-rays were negative, the team said.

• Washington Redskins coach Mike Shanahan says there's "no possibility" Robert Griffin III will play in the preseason, rebuffing the quarterback's public lobbying effort from earlier in the day. Shanahan also said he's made no deal with RG3 about being patient during camp in exchange for a promise to play in Week 1.

• Kicker Ryan Longwell has retired as a Packer. Longwell, the all-time leading scorer in Green Bay history with 1,054 points from 1997-2005, played his final six seasons with Minnesota. He ranks No. 13 on the NFL's all-time scoring list with 1,687 points.

• New York Giants veteran safety Antrel Rolle wascarted off the practice field after apparently hurting his right ankle at training camp.

• Browns running back Montario Hardesty injured his right thumb.

• Jets RB Joe McKnight collapsed but was OK after recovering from a head injury and dealing with dyhydration in camp.

• Carolina backup offensive tackle Bruce Campbell will need surgery to repair a torn left rotator cuff.