Clayton Johnston admitted even before he received an offer from USC that one from the Trojans would definitely be big in his recruitment.
After working out at the USC camp last week and picking up the offer, it had become pretty clear that the Anaheim (Calif.) Servite three-star offensive tackle had his mind made up.
Johnston, a 6-foot-6, 289-pound prospect, picked USC over Arizona State, Cal and Wake Forest on Wednesday afternoon but once he received the offer from the Trojans the three other programs did not have much of a chance.
The three-star worked out with coach Steve Sarkisian and offensive line coach Tim Drevno among others at USC's camp and he picked up the offer shortly after the trip.
It was definitely a big deal.
"I did really well in the first session and got MVP," Johnston told USCFootball.com. "Coach Drevno said he wanted me to keep up the work because he was going to challenge me in the next session.
"He told me he wanted to see if I would break. He was very hard putting me through drills because he wanted me to know what it meant to be a Trojan. It was definitely harder than what you go through in high school but it taught me a lot."
Following the camp, Sarkisian offered Johnston, who said it was definitely huge. At that point, the three-star wasn't sure about committing this early but he did make it clear the Trojans would be tough to beat.
After an impressive junior season, Johnston, rated as the No. 46 offensive tackle in the 2015 class by Rivals.com, has had a strong off-season.
The Anaheim Servite standout looked good at the RCS Southern California where he was one of the top offensive linemen and then again at the B2G Elite Camp in recent weeks.
Many other programs had offered but Johnston narrowed his list to a final four in the last week or so and then picked the Trojans on Wednesday.
Johnston chose USC at noon which is a big pickup on its offensive line but the Trojans missed out earlier in the day when four-star tight end Tyler Petite surprisingly chose Duke over the Pac-12 power.
USC has the top-rated class in the Pac-12 by Rivals.com.