3. Matt Cassel looks to be starting. Most teams are cautious with hamstring injuries, and Marcus Mariota isn't practicing much with his this week. So expect Cassel to play. The Dolphins have an ugly recent history against back-up quarterbacks. Still, Cassel shouldn't scare anyone. He had two starts in 2016 and posted a 74.2 rating against Houston and 65.3 He's lost seven of nine starts through 2015. The Dolphins defense has played well enough to win this year in allowing no more than 20 points in three games. They're not a weapon. They don't cause turnovers. They don't swing games. But considering the injuries they've had and position they've been put in by the offense they're playing well enough. Facing Cassel should mean they play winning ball for another week.