The Patriots announced yesterday that running back Ty Montgomery has been placed on I.R. Montgomery played in Sunday’s opener against the Dolphins.

Montgomery injured his knee in the preseason finally against the Raiders and it appears like he re-aggravated the injury.

The Patriots have called up wide receiver Lil’Jordan Humphrey from the practice squad and signed offensive tackle Marcus Cannon to the practice squad.

The expectation is that Montgomery will miss four weeks as a result of the injury.

With Montgomery out, it opens the door for rookie Pierre Strong to get more touches. Expect Damien Harris and Rhamondre Stevenson to get more touches in the passing game as well.