Playing for the Memphis Showboats of the USFL, Lewis split time with Mike Kelley both seasons. In 1984, he completed 161 of 276 passes (58%) for 1,862 yards, 15 touchdowns, and 10 interceptions, and also ran 60 times for 552 yards and 5 touchdowns.[3] In 1985, Lewis completed 97 of 184 (53%) for 1,593 yards, 16 touchdowns and 5 interceptions, and also rushed 65 times for 591 yards and 4 touchdowns.[4]