There's a slogan that coaches repeat often: Good is the enemy of great.

The idea is simple enough. To settle for good is to abdicate a quest for greatness. Coaches like great. Good is only important in contract negotiations.

Aside from Georgia, which beat Florida easily on Saturday and appears destined for an SEC title game date with Alabama, the biggest question looming over the 2021 season is about the difference between good and great. Georgia is great. Everyone else? Hard to say. Saturday's games were supposed to offer answers.

That brings us to the Big Ten.

A few weeks back, the Big Ten had five teams ranked in the top 10, and you might have assumed that at least one of them was great.

And then Penn State lost in 27 overtimes to Illinois.

And then Iowa remembered that scoring points matters.

And then Michigan -- poor, sweet Michigan -- played a rivalry game.

Nowhere is the good-to-great dynamic more apparent than with Michigan, which fell to Michigan State 37-33 on Saturday.

Jim Harbaugh is a good coach. He's won a lot of games at Michigan. It's just hard to remember a single one of them that really mattered.

Harbaugh famously won for the first time at Michigan as an underdog earlier this season, which raised the question: Why was Wisconsin favored in that game to begin with? While big wins are few under Harbaugh, the crushing defeats are everywhere. The 2016 Orange Bowl. The 2018 Notre Dame game. The ultimate surrender cobra. A 3-9 career mark against rivals Michigan State and Ohio State. The man has a flair for the big stage -- if that flare is a raging inferno that engulfs his entire program in pain.