Nathan was the Dolphins' starting running back in Super Bowl XVII and Super Bowl XIX. He had a superb performance in Super Bowl XIX, with 18 yards rushing and 10 receptions for 83 yards. His ten receptions were the second most in Super Bowl history at the time. He was also instrumental in the Dolphins' 45-28 win over the Pittsburgh Steelers in the , in which he rushed for 64 yards and a touchdown, and caught eight receptions for 114 yards. He also had a key performance in the against the San Diego Chargers that became known as "The Epic In Miami". Nathan gained 169 total yards and scored two touchdowns in the Dolphins' narrow loss, including a score on the famous "hook and lateral" play in which he caught a toss from receiver Duriel Harris.