Updated

New York Jets rookie safety Calvin Pryor has been diagnosed with a concussion, and tight end Jace Amaro was sidelined in the middle of practice after tweaking his right knee.

Coach Rex Ryan clarified Sunday that Pryor was injured while covering a kickoff — not a punt return, as he originally thought — during drills Saturday when the returner was knocked into him. Pryor, the team's first-round draft pick, was not at practice and will be sidelined while he goes through the NFL's protocol for head injuries.

Amaro, New York's second-rounder, says his knee buckled Sunday, the result of a nagging tendon injury he has felt throughout the offseason. He says he should be fine when the Jets next take the practice field on Tuesday.

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