LOS ANGELES (AP) -- A Heisman Trophy winner on each side. The most hallowed venue in college football. The defending national champion on a 29-game winning streak. A game that's never been played before.Welcome to the College Football Playoff at the Rose Bowl, where the past and present intersect to usher in a new era.Marcus Mariota and second-seeded Oregon (12-1) face Jameis Winston and third-seeded Florida State (13-0) on Thursday in the first national semifinal ever played at college football's highest level.\They've got a great team. We've got a great team. It ought to be fun