Brandon Jacobs doubtful for Sunday

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With their season pretty much on the line Sunday at Philadelphia, the Giants look like they will once again be leaning on Peyton Hillis at running back.

Tailback Brandon Jacobs (hamstring) was not participating in practice on Friday, Kieran Darcy of ESPNNewYork.com reported. With Jacobs also missing practice on Wednesday and Thursday with the injury, Hillis stands a good chance at being a big part of the Giants’ offensive gameplan on Sunday.

According to Conor Orr of the Newark Star-Ledger, Jacobs is designated as doubtful for the Philadelphia game.

In his first game with the Giants on Monday night, Hillis carried 18 times for 36 yards and a touchdown and caught five passes for 45 yards. It was a workload reminiscent of his breakout 2010 campaign with Cleveland, when he was the club’s leading rusher and second-leading pass catcher.

The Giants (1-6) are two games behind the second-place Eagles (3-4) in the NFC East. Philadelphia can sweep the season series with a win against New York on Sunday, which would be a devastating blow to the Giants’ flickering hopes of getting back into contention in the division.