The Bills waived Gore (knee) on Tuesday, Tom Pelissero of NFL Network reports.
The son of longtime NFL running back Frank Gore, the Southern Miss product went undrafted in April before signing with the Bills. Gore was impressive during the preseason, rushing for 163 yards and one touchdown on 33 carries while adding four grabs for an additional 16 yards. It wasn't enough to claim a 53-man roster spot behind James Cook and fourth-round rookie Ray Davis, but there's a good chance Gore is either claimed or lands a job on a practice squad.