FLORHAM PARK, N.J. -- The New York Jets' roster upheaval continued on Tuesday, as they placed two starters on injured reserve -- right tackle Breno Giacomini and safety Marcus Gilchrist.

The Gilchrist move came as no surprise, as he left Sunday's game with a torn patella tendon in his knee. He will have surgery and faces several months of rehab.

Giacomini didn't play Sunday because of back, shoulder and calf injuries. He was hopeful last week at the prospect of playing, but evidently his injuries were more serious than he was letting on.

This has been a frustrating year for Giacomini, who began the season on the PUP list because of a herniated disc in his back. He returned, started five games and got hurt again. Coach Todd Bowles said Giacomini probably will need surgery.

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Giacomini is under contract for 2017, but he could be a salary-cap casualty. His cap charge is $5.1 million. Gilchrist ($6.6 million) falls into the same category, especially with his injury status.

The Jets have a total of 12 players on IR, eating up $35 million in cap space. That's rather remarkable.

The Jets could end up starting their fourth right tackle on Saturday night against the Miami Dolphins. They've started Giacomini, Ben Ijalana and Brent Qvale, who is nursing a hamstring injury. The next man up is rookie Brandon Shell, who has no career starts.

To fill the roster spots, the Jets signed guard Craig Watts and safety Ronald Martin from the practice squad.