SANTA CLARA — Linebacker Dre Greenlaw was held out of practice Thursday due to a hamstring injury, the 49ers shared on their official injury report. Greenlaw did not take part in practice on Wednesday, but it was described as a day of rest and "not injury-related." That changed on Thursday. "Dre couldn't go today, so hopefully he'll feel better tomorrow," 49ers coach Kyle Shanahan said on his weekly appearance with KNBR 680's "Tolbert & Copes." Backup running back Elijah Mitchell returned to the field after missing the past two games with a knee injury. Mitchell and left guard Aaron Banks (shoulder) took part in limited work, according to the team's official injury report. The 49ers are scheduled to have a lighter practice Friday before traveling to face the Cleveland Browns in Week 6 on Sunday. Second-year running back Jordan Mason filled in as the backup during Mitchell's absence and played well. He is the team's second-leading rusher behind Christian McCaffrey with 90 yards (5.6 average) and a touchdown on 16 rushing attempts. In three games this season, Mitchell has gained 52 yards (3.3 average) on 16 rushing attempts. Banks sustained an injury — originally feared to...
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