Table:
text: 1983 Minnesota Vikings season
Schedule
Schedule
Week Date_ Opponent Result_ Attendance
10 November 6, 1983 Tampa Bay Buccaneers L 17-12 59239
11 November 13, 1983 Green Bay Packers L 29-21 60113
12 November 20, 1983 at Pittsburgh Steelers W 17-14 58417
13 November 27, 1983 at New Orleans Saints L 17-16 59502
14 December 5, 1983 at Detroit Lions L 13-2 79169
15 December 11, 1983 Chicago Bears L 19-13 57880
16 December 17, 1983 Cincinnati Bengals W 20-14 51565

Question: What happened on November 20, 1983 prior to week 15 of the Minnesota Vikings 1983 season?