Fegans, a four-star safety from Thompson High School (Alabama) who is rated as the second-best safety in the junior class, had been the first 2025 commitment for USC coach Lincoln Riley since he pledged on May 7.
"Kind of (rushed)," Fegans told ESPN about the decision to initially commit back in May. "It was a family agreement (to take another look). They just wanted me to go out and enjoy the process until it is official.
"It was just all in the moment, you know, for publicity and all that kind of stuff."
The 6-foot-2, 190-pound Fegans recorded 67 tackles (44 solo) with nine interceptions as a sophomore for Thompson last year.
He will be playing in the 2025 Under Armour All-American Game.
His older brother, Tre'Quon Fegans, transferred from Alabama to USC on May 7 after entering the transfer portal on April 19.
Tre'Quon, who was No. 67 in the 2022 ESPN 300, didn't appear in a single game for the Crimson Tide last year. He didn't play in the Trojans' season-opening victory over San Jose State Spartans on Aug. 26.
"We're extremely close," Anquon said. "We really grew up playing football with each other all the time. So that really isn't just gonna go away. ... What (advice) he's given me was just take it slow. Most coaches will really tell you the same thing. So you got to go where you feel like it is home for you."
USC's 2024 recruiting class is ranked 18th by ESPN.