Miami Dolphins quarterback Trent Green suffered a concussion and was taken off the field on a stretcher Sunday after trying to throw a block against Houston. he 37-year-old Green was sidelined for more than half of last season for the Kansas City Chiefs after sustaining a concussion. The Dolphins had the ball at the Texans 25-yard line when Green tried to pitch the ball to Ted Ginn Jr. The rookie fumbled, then picked the ball up and reversed field as the defense chased him. Texans defensive tackle Travis Johnson hit Green in the head with his knee before Ginn was tackled by Anthony Weaver. After the play ended, Johnson stood over Green and taunted him, drawing a 15-yard penalty.