Ravens' Breshad Perriman tweaks knee injury in warmups

Baltimore Ravens rookie wide receiver Breshad Perriman aggravated his right knee injury during pregame warmups Sunday, Jamison Hensley of ESPN reports.

Perriman suffered the injury on the first day of training camp. He had already been ruled out of Sunday's game.

The first-round pick was spotted limping after trying to run down a deep pass in the end zone. He spoke briefly with a trainer, but remained on the field and continued to catch passes while standing still.

Ravens head coach John Harbaugh said Friday that Perriman was "getting close" to returning.