Michigan and Michigan State don't play until next week, but the Spartans' faithful have already thrown the first punch.
In green marker, on the wall of a press box bathroom in Michigan Stadium, someone has scrawled the 27-23 final score of 2015's wild meeting between the two rivals.
It was a year ago this week that a botched Michigan punt turned into a 38-yard touchdown return with no time left on the clock. Depending on what colors you wear, it was the most incredible or painful chapter of the storied history between the two programs.
The loss was the Wolverines' second in its first year under coach Jim Harbaugh.