The Michigan fan base showed up in a big way in a 27-24 win over coach Lincoln Riley and USC, playing a key role in the victory. They were loud from the get-go, helping will the Wolverines to a critical Big Ten opening win spurred by running back Kalel Mullings. RELATED: Michigan 27, USC 24: Notes, quotes, and observations on a season saver USC head coach Lincoln Riley praised the U-M fans while also lamenting letting a potential win slip away. “We came up one play short,” Riley said. “We were proud of the fight of our guys. We fought our tails off, didn’t play particularly good in the first h…