What we know through CFB's Week 4, plus Kamario Taylor's rise and Michigan's karma

Through Week 4 of the college football season, several key storylines have emerged, including the rise of receiver Kamario Taylor and Michigan experiencing a karmic reversal as Iowa scored a touchdown on the final play to defeat the Wolverines. Oregon's Dillon Gabriel Raiola stepped in for injured Ducks quarterback Dante Moore and rallied the team past USC, while Florida handed Ole Miss a decisive defeat. Oklahoma's head coach Brent Venables also considered benching quarterback John Mateer during a difficult first half against Georgia.