USC football breakdown: How the Trojans look at quarterback

LOS ANGELES — In his freshman year of high school, long before he was minted as Lincoln Riley’s next quarterback of the future at USC, Husan Longstreet was stuck behind Lincoln Riley’s first quarterback of the future at USC.

Longstreet had enrolled at Los Alamitos, a kid who’d watch film for four hours straight since he was in middle school hoping for a fair shake at some snaps. Malachi Nelson, though, stood in his way in that 2021 season, a five-star prospect who had committed to USC and...