Week 4 wound up being sneaky entertaining. There are no Top 10 matchups to look forward to in Week 5, but it has the potential to shake up the College Football Playoff picture.

Here’s what you need to know about Friday and Saturday:

*Will USC be able to catch up to Wazzu if the Trojans start slowly? (USC at Washington State, Friday, 10:30 p.m. ET, ESPN)

USC has flirted with disaster all season. Its game against Western Michigan came down to the fourth quarter. The Trojans needed overtime to beat Texas. Cal hung with them for an uncomfortably long time.

Washington State is USC’s toughest test yet. Especially in Pullman, where the Cougars are incredibly tough. If Sam Darnold and company get off to a slow start on Friday night, as they’ve done all year, they may not be able to catch up. That’s because Luke Falk is commanding the opposing huddle. Falk doesn’t have the ability Darnold does, but he’s a more accomplished college quarterback.