CORTLAND, N.Y. - It wasn't a great weekend to be a Jets' high draft pick.

Jets coach Rex Ryan announced Sunday that safety Calvin Pryor, the team's first-round draft choice, has suffered a concussion and could be off the field for a while. Meanwhile, tight end Jace Amaro, the team's second-round pick, tweaked his right knee in a 7-on-7 drill Sunday. He is expected to be back when the team resumes practice Tuesday after taking Monday off.

Pryor, who was injured during Saturday's practice, was not at Sunday's practice. He will go through the NFL's protocol for head injuries, meaning he will be examined by doctors daily and must pass a series of tests before he is allowed back on the practice field.

Pryor tweeted at 7 p.m. Saturday night that he was "fine . . . no worries." He hasn't posted a tweet since then. Ryan said he could not project when Pryor might return.

"For me, it's out of your hands as a coach," Ryan said. "That's a good thing. Because you don't want a guy to get out there when it's not in his best interests."

Depending on Pryor's symptoms, the doctors could recommend complete rest, which means he would also miss out on film sessions and team meetings, Ryan said.

advertisement | advertise on newsday

Pryor, whom the Jets selected out of Louisville with the 18th overall pick, was considered a contender for a starting position coming into camp and had been getting a fair amount of first-team reps over the first two days.

Ryan had initially said that the injury had happened when Pryor was on in punt protection. Sunday, the coach corrected himself, saying that Pryor had actually suffered the concussion during a kickoff return drill.

"He was blocking, and the return man kind of got knocked into him and kind of just hit him right," Ryan said. "Like one of those heavyweights hitting you in the chin. The lights go out."

Ryan was questioned Sunday about whether Pryor, a potential starter, should have been playing on special teams.

"I think when you look at them, we're going to play them all," Ryan said. "This is as deep a group as we've had at safeties and those are guys who can run and hit. We have those guys on all of our special teams, because we think we have to get better and want to be one of the top special teams in the league and it's all hands on deck."

Though not thought to be immediately serious, there was some debate about the nature of the injury to Amaro's knee. Amaro, whom the Jets would like to play a big role in improving their sluggish passing game, said after practice that he had aggravated his patellar tendon, adding that it has been sore for the past couple of months. Ryan, however, referred to the condition as tendinitis.

The injury occurred when Amaro jumped to catch a pass and then turned after he landed in attempt to go up field.

"I took a little hard cut, and it gave out a little bit," Amaro said. "I just hit the ground hard, and when I cut, it just kind of buckled on me. I didn't get much explosion on my break [after landing] and it kind of just caught me off guard."