 The NASCAR Xfinity Series. Here they come up off turn number four. Green flag goes in the air. Is back running in the streets of Chicago. Triple turn three. John Hunter-Niemicek up and into the outside wall. As the summer of racing heats up on Michigan Avenue. Riley will give it one more run. It will not be enough. And Sam Mayer has won. It's the Loop 110. On Saturday at 2 p.m. on 106.3 FM.