Jarvis Jones diagnosed with concussion

The Pittsburgh Steelers have announced that Jarvis Jones sustained a concussion last weekend.

The rookie linebacker was listed on the injury report with a head injury earlier this week, before the team's doctors confirmed that he had a concussion yesterday.

The 24-year-old initially suffered no symptoms, but complained of a headache when reporting to the Steelers' facility on Monday.

Jones has made 18 tackles so far this season.