Aaron Maybin out, Kevin O'Connell in

The New York Jets shook up the bottom of their roster Sunday with several moves, including the re-acquisition of journeyman quarterback Kevin O'Connell and the release of former Buffalo Bills draft bust Aaron Maybin.

In a surprise, the Jets placed rookie quarterback Greg McElroy (thumb surgery) on injured reserve, ending his season -- only one day after coach Rex Ryan indicated they weren't planning to put him on IR.

O'Connell, released Saturday by the Miami Dolphins, was claimed on waivers -- hardly a surprise. He was on the Jets' roster in 2009 and spent last season on their injured reserve list because of labrum surgery. He's never appeared in a game for the Jets, but he at least knows their system.

With No. 2 quarterback Mark Brunell, 40, coming off calf and pinkie injuries that caused him to miss all four preseason games, the Jets needed a third-stringer that could at least function in their offense.

As expected, the Jets opted for O'Connell over Kellen Clemens, who was cut by the Washington Redskins. Clemens would've cost a little more and, as a vested veteran, his 2011 salary would've been guaranteed by being on the opening day roster.

McElroy, injured in the final preseason game, underwent surgery Friday morning. At the time, he was expected to start throwing soon, according to a person close to him. The Jets never gave a specific timetable for McElroy's return, saying he'd be out "indefinitely."

Maybin, released by the Bills after the first preseason game, survived Saturday's cutdown to 53, but he never was a lock to make the team. Despite 1½ sacks in the final preseason game, he apparently didn't show enough to warrant a role as a pass-rushing specialist.

The Jets kept eight linebackers, including three with no NFL experience. Maybin played two seasons with the Bills, although he never registered a sack and became known as one of the biggest busts in recent years. He was the 11th overall pick in 2009.

Also Sunday, the Jets acquired center Colin Baxter (San Diego Chargers), safety Andrew Sendejo (Dallas Cowboys) and wide receiver Mardy Gilyard (St. Louis Rams) on waivers.

To make room for them, they released nose tackle Martin Tevaseu and cornerback Isaiah Trufant.

They also signed seven players to their practice squad: tight end Josh Baker, LB Matt Berning, guard Trevor Canfield, defensive tackle Jarron Gilbert, guard Matt Kroul, cornerback Julian Posey and wide receiver Patrick Turner.

They still have one opening on the practice squad.

Rich Cimini covers the Jets for ESPNNewYork.com.