"I've canceled my other officials," Dorton said.
"My official visit to USC went pretty good," Dorton explained. "We toured campus, had some good dinners, and I met academic people."Ty Isaac was Dorton's host. Dorton said he's gotten to know Isaac through his multiple unofficial visits to campus.
The three-star defensive end met with coach Steve Sarkisian, who will also visit Dorton in-home later in the week.
He also sat down with new defensive line coach Chris Wilson to discuss his future role in the program.
"[Wilson] was just saying he saw my film and he told me where he could see me playing… coming off the edge," Dorton said.
Also on an official visit over the weekend was Dorton's high school teammate Damien Mama. Mama, the No. 1 offensive guard in 2014, will announce his college decision on Feb. 5, National Signing Day.
Long Beach (Calif.) Poly five-star safety Juju Smith was also at USC for a visit. Smith will be making his announcement on signing day, as well.
"We all had a great talk," Dorton said. "I talked to them about coming, so we'll see."