The nation's leading rusher entering the weekend, Abdullah was hurt while diving to recover a fumble at the Purdue 1 on a fourth-down fumble by quarterback Tommy Armstrong Jr.
Abdullah was fitted with a sleeve over his left knee and returned for one possession, rushing once for a 5-yard loss. He then returned to the sideline as trainers applied ice to the knee.
Nebraska backups Imani Cross and Terrell Newby have shared time in Abdullah's absence.
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