Theismann's career. The December 2 game between the Bears and the Dolphins, when the Dolphins put an end to the Bears' bid to match their undefeated season in 1972, was and still is the highest rated game in Monday Night Football history. 1986 NFL season During this season, MacGyver began a six-year run as the program's lead-in – the longest lasting such program in history. The September 8 game between the New York Giants and the Dallas Cowboys marked the NFL debut of Herschel Walker. The September 29 game was the last MNF game in St. Louis until 2000, when the Rams played their season opener at the Trans World Dome. The October 27 game took place at the same time as Game 7 of the 1986 World Series at Shea Stadium in nearby Flushing, New York (the World Series finale was scheduled for the previous night, but was rained out). The Sunday, December 7 game between the Los Angeles Rams and Dallas Cowboys is remembered for Cowboys head coach Tom Landry being escorted off the field before the start of the 4th quarter due to Anaheim police learning of a threat on Landry's life. Landry would return after being fitted with a bulletproof vest. 1987 NFL season There was a player strike called after the completion of Week 2's games. As a result, all games for Week 3 were canceled but unlike the 1982 players' strike, owners decided to resume play with replacement players. Replacement players were used in games played from Week 4 until Week 6 (including the 49ers–Giants, Raiders–Broncos, and Redskins–Cowboys MNF games). Once a new collective bargaining agreement ended the strike, regular players came back and played starting with Week 7. The October 26 game between the Broncos and the Vikings was rescheduled because Game 7 of the 1987 World Series (which was also broadcast by ABC), which featured the Minnesota Twins, had to play at the Hubert H. Humphrey Metrodome on Sunday night, when the Vikings were originally slated to host the Broncos. Therefore, the game was moved to Monday night, and was played simultaneously with the Browns–Rams game. Coincidentally, the Browns had been slated to host the Broncos in the canceled Monday night game (in a rematch of The Drive). The Broncos-Vikings game, originally to be shown on NBC, was broadcast only in Colorado and Minnesota as part of ABC's ''Monday Night Football.'' The