OAKLAND, Calif. (AP) -New York Jets running back Leon Washington broke his right leg in the first quarter against the Oakland Raiders on Sunday and underwent surgery after the game.

Washington went down on his only carry of the day when a defender rolled up on his right leg after a 6-yard run. Teammates said the bone broke through the skin, and it was visible on the field. Washington was helped off the field by two trainers and then taken away on a cart.

He was diagnosed with a broken right fibula and underwent surgery immediately after the Jets' 38-0 victory. The team said he would be out indefinitely.

``That's unfortunate,'' coach Rex Ryan said. ``It's obviously a severe injury, but hopefully he'll be joining us sooner than later.''

Washington, who made the Pro Bowl last season as a kick returner, is also New York's second-leading rusher with 330 yards on 71 carries. He also has 15 catches for 131 yards and takes direct snaps when the team runs out of the seminole formation.

In his absence, rookie Shonn Greene excelled, carrying 19 times for 144 yards and two touchdowns. Greene, a third-round pick out of Iowa, had only eight carries for 31 yards coming in.

It's the second major injury to a key player for the Jets in as many games. Nose tackle Kris Jenkins was lost for the season after tearing the anterior cruciate ligament in his left knee in New York's 16-13 overtime loss to Buffalo last Sunday.