McMorris (foot) is wearing a boot on his right foot Friday, David Furones of the South Florida Sun Sentinel reports.
It's not clear when or how McMorris hurt his foot, but the injury will likely keep him out of the Dolphins' preseason finale Friday versus Tampa Bay. The rookie safety had been turning heads in camp, and he played in both of Miami's first two exhibition matchups, including in the preseason opener against Atlanta when he tallied a team-high eight tackles (seven solo) -- including two tackles for loss -- and a defensed pass. McMorris has been on the bubble for a spot on the 53-man roster, and it's not clear how the foot injury will impact his standing in that regard.