The Seahawks’ emphasis on re-establishing the run has encountered a big hurdle.

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Rashaad Penny, a rookie running back and the Seahawks’ 2018 first-round draft pick, has a broken finger and will miss 3-4 weeks. The news was first reported by the NFL Network’s Ian Rapoport.

Seahawks coach Pete Carroll said after the team’s practice Wednesday that Penny’s surgery went well.

“He can already move it and it’s not going to be in a cast or any of that kind of stuff, so he’s in pretty good shape,” Carroll said. “We got a great report on it. He’s not going to be out very long at all.”

The rookie running back out of San Diego State was injured during pass-blocking drills Monday and left the field with trainers.

Carroll said he believes Penny can still be ready for the start of the regular season.

“I don’t have any doubt about what he’s capable of doing. I really don’t,” Carroll said. “We just got to make sure he’s in great shape and let him play ball.”

The 22-year-old Penny was a star at San Diego State, leading the country with 2,248 rushing yards in 2017. He made his preseason debut last week, rushing for 16 yards on eight carries in a 19-17 loss to the Indianapolis Colts.

Penny’s injury will open the door even further for second-year running back Chris Carson to take the starting job for Seattle. Carson, who looked promising in 2017 before suffering a leg fracture, has been one of the standouts of Seattle’s offseason program and training camp. He led the Seahawks with 26 yards on four carries in last week’s preseason game.

The Associated Press contributed to this report.

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