But a week ago, Jefferson dropped the Trojans and on Tuesday night, Jefferson committed to Pac-10 rival UCLA.
"I committed to UCLA last night," said Jefferson. "I committed to Coach (Rick) Neuheisel. It's a great school and I just felt honesty with the coaches."
But with his commitment to the Bruins, Jefferson said he's not going to be taking those trips.
"I'm done," said Jefferson. "I made a decision that I'm going to be a December graduate and I wanted to be committed by September so I can focus on my senior season."
Jefferson had previously visited UCLA unofficially, but is hoping to get back up there in the next few weeks before his senior season starts.
"They want me to play safety and I just feel like UCLA is the right fit for me," said Jefferson.
In Jefferson, the Bruins land their highest rated prospect in the class of 2010, and first from the Scout 300.
Jefferson had a big junior season, recording 89 tackles, two interceptions, two sacks, a pair of fumble recoveries and a forced fumble. Offensively, he ran for 1,322 yards and 26 touchdowns and earned All-State Underclass honors.
Academically, he has a 2.8 GPA and scored a 1450 on the SAT.