September 8th Clemson Historic Picture And Trivia Question Of The Day

Today’s photo is from 1975 and shows Tiger Band marching around the east area of the stadium on their way into the pregame festivities.
Note the hats Tiger Band was wearing during this era.
You can also note that there are no tents for tailgating along Williamson Road.
Trivia Question
Clemson would lose a game in 1985 that had ramifications for the following season. What was it?
(Place answer in comments)