What happened: The 24-year-old Corey Kiner arrives as New England trims its roster from 91 players to 53. He adds a power option behind Rhamondre Stevenson and Treveyon Henderson.
Why it matters: Jam Miller's RB3 bid now faces another direct competitor before final cuts. Arizona converts a former undrafted free agent into future draft capital.
By the numbers: Across four NFL games, Kiner has 12 carries for 58 yards and two catches for 15 yards. His 73 scrimmage yards on 14 touches work out to 5.2 yards per touch.
What to watch: Watch whether Kiner claims a spot on New England's 53-man roster and how the move affects Miller.