The Browns beat the Rams to win the NFL championship in 1950, the team's first year in the league. The following year, Lewis returned a Bob Waterfield interception for 12 yards to the Cleveland 32-yard line during the Browns' 24–17 loss to the Rams in the NFL title game at the Los Angeles Coliseum. After the 1951 season, Lewis retired from the Browns to devote himself full-time to his insurance business.