Miami Dolphins quarterback Tua Tagovailoa has been placed on injury reserve following his latest concussion and will miss at least four NFL games, the Dolphins said late on Tuesday. Being placed on injured reserve means a player cannot return inside four weeks. He suffered his third NFL career concussion in last Thursday’s 31-10 defeat to the Buffalo Bills. Tagovailoa exited the game after taking a scary hit to the head in the third quarter. He laid on the ground for several moments before leaving the field on his own. The quarterback has a history of concussions, having been sidelined twice b…