In 1981, ABC and CBS set all-time rating highs. ABC finished with a 21.7 rating and CBS with a 17.5 rating. NBC was down slightly to 13.9. On October 18, 1981, Game 5 of the National League Championship Series between the Los Angeles Dodgers and Montreal Expos was postponed due to snow. The cancellation of Game 5 of the 1981 NLCS, which was supposed to be televised on NBC that Sunday afternoon, allowed CBS to achieve record breaking, regular season ratings for television viewership of pro football. It was rated as the most watched afternoon of regular season pro football on a single network in television history.