Behind three touchdowns passing and two rushing from quarterback Caleb Williams, eighth-ranked USC overcame a sluggish start Friday against Pac-12 Conference counterpart Colorado, remaining perfect all-time against the Buffaloes with a 55–17 rout in Los Angeles. The Trojans (9–1, 7–1 Pac-12) improved to 16-0 all-time against Colorado and continued their best start since the 2008…