Did the Detroit Lions ever play Monday Night Football at Tiger Stadium?

Yes, 5 times ... once a season between 1970-1974.

1) October 5, 1970 - Lions 28, Bears 14

2) September 20, 1971 - Vikings 16, Lions 13

3) October 16, 1972 - Packers 24, Lions 23

4) October 1, 1973 - Lions 31, Falcons 6

5) October 14, 1974 - Lions 17, 49ers 13