CB Antonio Allen sustains a concussion

EAST RUTHERFORD, N.J. -- New York Jets cornerback Antonio Allen sustained a concussion in the first half of a 35-24 loss to the New York Giants at MetLife Stadium in their third preseason game. Jets coach Rex Ryan confirmed that Allen was going through the NFL's concussion protocol.

The injury further complicates the team's issues at cornerback just two weeks before the start of the regular season.

"It's frustrating," cornerback Darrin Walls said. "We already have enough corners down, but hopefully he'll be fine."

Allen's injury came even as he and Walls -- backups pressed into starting roles for the game -- played fairly well. Allen had a tackle and a pass defended before heading to the locker room with the trainers.

In his debut as starting corner, Walls had three tackles and two defended passes while playing with the first team in the first half. He added another tackle and pass defended by the final buzzer.

One was early on, when he nearly intercepted Reuben Randle deep but kept the ball out of the Giants wide receiver's hands.

"I pretty much read the route, got a good jump on it." I was playing off coverage and I read what he was going to run."

Dawan Landry saw the play unfold, and has seen Walls jump routes like that a dozen times in practice.

"That's one of his favorite routes to be honest," Landry said. "I knew he'd make a play on that."

The performance was a positive for a position filled with question marks. The Jets lost projected starter rookie Dexter McDougle to an ACL injury two weeks ago. At the same time, starter Dee Milliner sustained a high ankle sprain and might not be ready to go at the start of the season when the Jets host Oakland. Veteran Dmitri Patterson, who played but didn't start, has been limited with a leg injury.

"One more week so we need to make sure we're communicating in practice, make sure we get whoever is in the game up to speed and we'll be fine," Landry said. "There's a lot of depth in our secondary so I know we'll be fine."

Criticism has been growing, as some are contending general manager John Idzik didn't shore up the position a little more in the offseason. This is a team that had Darrelle Revis and Antonio Cromartie just two seasons ago. With another player out for an indefinite amount of time, that criticism could get louder.