Brandon Jacobs out Monday

The New York Giants, who have been playing running back roulette all season, were without Brandon Jacobs for Monday night's game against the Minnesota Vikings.

Jacobs, who rushed for 106 yards on 22 carries in the Giants' loss to the Chicago Bears in their last game 11 days ago, did not play because of a hamstring injury, a source said.

Rookie Michael Cox, who was the second-to-last pick in this year's draft and has not yet had a carry, got the start with Peyton Hillis also active. Hillis signed with the Giants five days ago.

It also is possible that fullback John Conner could get a carry or two, although his role is more likely to be as a blocking back and possibly in pass protection.

Jacobs missed practice last Monday with the hamstring injury, but the team said it was just being cautious and he was back on the practice field Thursday.

But when Jacobs missed practice Saturday, it was because of an unforeseen setback, and the team listed him as questionable to play. The two days since have not improved the situation sufficiently.

The Giants were already without David Wilson because of a neck injury and Andre Brown because of a broken leg.

Giants coach Tom Coughlin said Thursday that Hillis already knows the offense because of his time earlier this year in Tampa Bay with offensive coordinator and former Giants assistant Mike Sullivan.