The Miami Dolphins have activated quarterback Tua Tagovailoa from injured reserve, allowing him to start against the Arizona Cardinals on Sunday. This decision follows Tagovailoa's successful clearance of the NFL's concussion protocol after missing four games due to a concussion sustained in Week Two. In a corresponding move, the Dolphins released quarterback Tim Boyle, leaving them with only two quarterbacks on the active roster: Tagovailoa and Skylar Thompson. Tagovailoa has reportedly looked sharp in practice, and his return is seen as a much-needed boost for a struggling Dolphins team that has lost four of its first six games. The Dolphins have also elevated long snapper Matt Overton and defensive tackle Neil Farrell from the practice squad for the game. Tagovailoa's strong performance in the past, including a significant contract extension earlier this year, adds to the anticipation surrounding his return.