As soon as the West Region (or, more aptly, Gonzaga’s region) was announced three Sundays ago, it was widely tipped as an easy path for the No. 1 overall seed. To be fair, Mark Few’s Zags have beaten all comers. They’ve often made things look pretty simple, drubbing Creighton by 18 points to earn their Elite Eight bid. On paper, for the best team in the country, what draw wouldn’t have felt like a cakewalk?

Not for nothing, what few saw coming was USC’s emergence as the most frightening defensive team in the tournament and a potentially capable match for the undefeated Bulldogs. The Trojans beat Kansas by 34 in the second round and emphatically clocked in for the Elite Eight with an 82–68 win over Oregon. With size across the board, their ability to mix and match defensive looks around Evan Mobley, the most gifted rim protector in college hoops, is next to impossible for opposing teams to simulate in walkthroughs.

Tuesday will tell just how tricky Gonzaga’s path to the Final Four really is, but it’s hard to envision a more intriguing opponent than USC. The Bulldogs are favored for a reason. If you’re hoping for an all-time memorable upset, it’s still wishful thinking, But here’s how the Trojans might draw it up.