A Sunday wouldn't be complete without a Jim Harbaugh appearance.
The flamboyant Michigan coach spent the last day of his weekend at the Michigan Motor Speedway, where he took in NASCAR's FireKeepers Casino 400 race as a self-invited guest of Joe Gibbs.
Gibbs, who owns and operates Joe Gibbs Racing, is the former longtime coach of the Washington Redskins.
Start your engine, Harbaugh.