Chicago street race earns NBC's best NASCAR ratings since 2017

NASCAR's first foray into city street racing resulted in a sharp uptick in interest from TV viewers at home.

The Grant Park 220, contested Sunday on a street course in Chicago, averaged just shy of 4.8 million viewers between NBC and Peacock.

That made it the most-watched NASCAR Cup Series race on NBC since a visit to Indianapolis Motor Speedway in 2017, NBC Sports said Monday. It was also the most-watched NASCAR race o