Jacobs, who played for the Giants from 2005-2011 and was a part of two Super Bowl-winning teams, should help a backfield in flux. Second-year starter in David Wilson is backed up by Da'Rel Scott and Michael Cox. But New York ran for only 50 yards in the season-opening loss to the Cowboys.
"Whatever they need me to do," Jacobs said. "Whatever role they want me to play, I'll come in and do it. I know the offense. I know they've made some tweaks, and I'll do whatever I have to do."
"We want to be the group that leads the team to victory."
Jacobs, a 2005 fourth-round draft choice, has played in 100 regular-season games for the Giants, with 48 starts. The franchise leader with 56 rushing touchdowns, Jacobs, 31, played in 11 postseason games with five starts, as well.
New York (0-1) will meet Denver (1-0) on Sunday.
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