Watch: Dolphins rookie RB De'Von Achane flashes remarkable speed on 76-yard TD

The 21-year-old fell in the draft due to concerns about his size (5-foot-9, 188 pounds), and it's likely safe to say several teams regret not taking a chance on the RB. Entering Week 5, he's been brilliant, rushing for 309 yards and four TDs on 27 carries. His Offensive Rookie of the Year odds have skyrocketed, too, as OddsChecker gives him the fourth-best odds (+1000) of winning the award.

He's made an already potent Dolphins offense even more difficult to defend. Per NFL Next Gen Stats, Miami has had three players (Achane, WR Tyreek Hill and RB Raheem Mostert) clock speeds of more than 21 MPH. Clearly, it can boast that it's the fastest offense in the NFL.

The speed could help the Dolphins break records this season. They're on track to score more than 637 points, which would set a new mark in the NFL.