The Lions will be without starting CB Terrion Arnold for Sunday's game against the Indianapolis Colts. Arnold was downgraded by the team's medical staff and ruled out for Week 12. Arnold suffered a groin injury during Thursday's practice.

The Lions won’t have either of the corners that they picked at the top of this year’s draft. The team announced that first-round pick Terrion Arnold has been downgraded to out with a groin injury and did not travel with the team to Indianapolis.

Lions rookie CB Terrion Arnold will not travel with the team to Indianapolis and has been ruled out for Sunday's game against the Colts due to a groin injury.

A starting cornerback for the Detroit Lions will not travel with the team to face off against the Indianapolis Colts.

Lions rookie Terrion Arnold told reporters that he feels like Detroit’s secondary is “the best secondary in the NFL.”

Lions rookie cornerback Terrion Arnold was added to the team’s injury report Thursday with a groin injury. The good news is Arnold did not miss practice because of the injury. He was listed as a limited participant. We’ll certainly know more Friday but this doesn’t sound like a huge concern.