Bobby Petrino, widely regarded as one of the brightest offensive minds/playcallers in the game, is returning to the FBS ranks as offensive coordinator at UNLV under new coach Barry Odom, sources told ESPN on Thursday. Petrino has been the head coach at Missouri State the past three seasons. He guided the Bears to FCS playoff appearances in two of his three seasons. When Petrino arrived, Missouri State had last played in the playoff in 1990. This will be Petrino's first assistant-coaching job since 2002, when he was the offensive coordinator at Auburn. Overall, counting a couple of promotions, this will be his 18th coaching job. Petrino, 61, has been wildly successful in previous head-coaching stops. He coached Heisman Trophy winner  Lamar Jackson at Louisville, elevated Arkansas and Louisville to national relevance for the first time in years, and has won 66% of his games as a college head coach. But he also has met controversy along the way, most notably at...