In Grubb's mind, physicality works in all shapes and sizes in an Alabama running back room that is returning its leading back in Miller, but for an offense that is losing its main performer in the ground game: quarterback Jalen Milroe.

Will the Alabama football running back rotation feature two ball carriers, or three? OC Ryan Grubb discussed that and more on the RB position Tuesday.

Then Grubb mentioned a wrinkle to the overall quarterback battle between Ty Simpson, Austin Mack and Keelon Russell. "All the guys are getting ones, twos and threes with the exception of Ty, " Grubb said.