Ventura (Calif.) St. Bonaventure center Giovanni Di Poalo committed to USC in July.
All signs pointed to him sticking with the Trojans, even after Pete Carroll left USC for the Seahawks.
But Di Poalo softened his stance and visited Arizona and UCLA.
On Wednesday morning, though, his fax went to Heritage Hall.
"He faxed his LOI to USC," said St. Bonaventure head coach Todd Therrian. "He's a Trojan."