Mykel Williams wasn’t the only rookie draft pick who was injured this week .

Running back Jordan James did not participate in Thursday’s practice after injuring a finger earlier in the week.

“Jordan James broke his finger, so he’s getting surgery on that,” Shanahan said, via David Bonilla of 49erswebzone.com. “He’ll be out a couple of weeks.”

James is expected to miss a couple of weeks.

The 49ers are left with Christian McCaffrey, Patrick Taylor Jr., Corey Kiner and Ameer Abdullah as the healthy tailbacks on their roster. Isaac Guerendo is out a couple weeks with a shoulder injury. \

The 49ers made James a fifth-round pick this spring.

He appeared in 38 games in his three seasons at Oregon and finished with 386 carries for 2,215 yards and 31 touchdowns. He added 42 receptions

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