USC's three offensive linemen (Zach Banner, Damien Mama, Chad Wheeler) and RB Justin Davis got things started on Friday.
Banner, who dropped 8 lbs. since the Senior Bowl, ran a 5.58 40-yard dash and benched 225 lbs. 22 times.
Mama ran a 5.86 40 but did not bench.
Wheeler ran the fastest 40 of the three (5.48).
Davis only participated in the bench press, but performed well, tying for sixth among RBs with 21 reps.
USC's wideouts took the field the next day.
JuJu Smith-Schuster impressed with a 4.54 40 and a 120 inch broad jump, and stopped to chat with NFL Network's Colleen Wolfe afterward.
Darreus Rogers didn't run the 40, but notched a 112 inch broad jump and a 26.5 inch vertical.
Come Sunday, it was DT Stevie Tu'ikolovatu's turn to make his mark.
He led the Trojans with 28 reps on the bench, ran a 5.45 40 and caught teams' eyes in more than one way.
All eyes were on Adoree' Jackson on Monday, rounding out USC's participants at the Combine.
The Thorpe Award winner went 4.42 in the 40 (seventh fastest among DBs) and posted a 36.0 inch vertical (tied for ninth among DBs).
Watch Jackson's interview after finishing drills and meetings!
Next up for the Trojans is Pro Day on March 22.
After that, they await their fate in the 2017 NFL Draft, which takes place from April 27-29.