Arizona Cardinals quarterback Matt Leinart and University of Southern California basketball player Brynn Cameron are expecting a baby in the fall, PEOPLE has learned. Leinart, 23, one of PEOPLE's 2006 Most Beautiful People, graduated from USC in December 2005 and lives in Los Angeles and Arizona. Cameron, a 20-year-old USC junior, will sit out the upcoming basketball season. "It's an exciting time in their life," says a source who knows both athletes. "They both have support from their families."