It doesn't help that Khalil Mack is no longer in the building. Now in Chicago, Mack wasn't just Oakland's leading sack artist over the last three seasons. The defensive end was a total disruptor, leading the team in QB hits (22), hurries (40) and tackles for loss (15) in 2017. Mack's likely replacement along Oakland's defensive line, Tank Carradine, has 13 QB hits and nine total tackles for loss in his career.