technical glitch led to Fleming and Cope's commentary going out over NBC's television broadcast in place of the network's own audio during the coin toss ceremony. After his call of Super Bowl XIII, Curt Gowdy would leave NBC for CBS, calling games with Hank Stram for two seasons. 1980s NBC made history in the 1980s with an announcerless telecast, which was a one-shot experiment credited to Don Ohlmeyer, between the Jets and Dolphins in Miami on December 20, 1980, as well as a single-announcer telecast, coverage of the Canadian Football League during the 1982 players' strike (the first week of broadcasts featured the NFL on NBC broadcast teams, before a series of blowout games on the network and the resulting low ratings resulted in NBC cutting back and eventually canceling its CFL coverage), and even the first female play-by-play football announcer, Gayle Sierens (which in its own way set the mold for female sportscasters of today). Bob Trumpy filled in for Merlin Olsen alongside Dick Enberg during the Oakland-Philadelphia regular season game in Week 12 of the 1980 season. Television ratings in 1980 were the second-best in NFL history, trailing only the combined ratings of the 1976 season. All three networks posted gains, and NBC's 15.0 rating was its best ever. NFL broadcasts on CBS and ABC had their best ratings since 1977, with 15.3 and 20.8 ratings, respectively. 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 however, was down slightly to 13.9; this was, at the time, the nadir of the Fred Silverman era, when ratings for the network were down across the board. On November 15, 1981, the San Francisco 49ers game against the Cleveland Browns sold out in time for the TV blackout to be lifted. But KRON (NBC in the Bay Area) had to air Oakland's road game against Miami. They ultimately showed the Browns-49ers game on tape delay that night. On January 2, 1982, NBC was on hand for a divisional playoff game between the San Diego Chargers and Miami Dolphins that would go down as the "Epic in Miami". The game, won by the Chargers in overtime, 41–38, is one of the most famous in National Football League lore because of the conditions on the field, the performances of players on both teams, and the numerous records that were set.