Kyle Larson’s trip to Oskaloosa was a profitable one.  The Californian won Monday night’s Sage Front Row Challenge at Southern Iowa Speedway to take home the $20,000 first prize.  He became the first driver to win both an Ultimate Challenge and a Front Row Challenge. Christian Kinnison of Texas won the Badger Contracting IMCA Racesaver 305 sprint car main event.  There’s more racing tonight at Southern Iowa Speedway with the ASCS Ultimate Challenge.  The front gate of the grandstand opens at 5:00.