With the in-season tournament — part of a new media rights deal that includes TNT — NASCAR is following in the footsteps of the NBA and soccer leagues around the world. After Sonoma this weekend, it concludes with races at Dover and Indianapolis Motor Speedway.

Temperatures cooled down for Sunday afternoon's main event, the NASCAR Cup Series Grant Park 165. There was a chance for rain in the forecast — something that's caused the main race to be shortened in each of the first two Chicago Street Race events.

Shane van Gisbergen has swept the NASCAR National Series poles for this weekend's action at the Chicago Street Course as he topped Michael McDowell for the pole in Sunday's NASCAR Cup Series Grant Park 165.