Coach Dan Campbell said the Lions are taking a "conservative" approach with Swift's groin injury, which is the reason he didn't suit up for Friday's preseason loss to the Bills, Chris Burke of The Athletic reports.

EDGE Analysis

Campbell added Swift was healthy enough to play if Detroit needed him, but his health concern has lingered, hence the stated approach with his return. Plus, it's exhibition season, so it's no surprise the running back was kept on the sideline. In Swift's stead, Jamaal Williams got the start and mustered just 15 yards on nine carries.