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.

SportsLine's model has simulated the 2025 NASCAR Chicago race and Round 2 of the NASCAR In-Season Challenge 10,000 times and released its three best NASCAR longshots

The NASCAR Cup Series returns to the Windy City on Sunday afternoon, with the best drivers in the sport competing on the streets of Chicago in the Grant Park 165.