With today starting the B1G media days, I've seen a lot of posts about this being the start of college football season. For the media, maybe.
Personally, I think this is bull squirt. Until pads start popping, nothing is really started IMO. So I see three options to this question
1. Conference Media days
2. Fall Practices/Camp (my vote)
3. The first CFB game of the season
Are there any other options? Which is your call for the start of the season?