IndyCar had average audiences over 1 million after the Indy 500, but the last four races haven't come close to that. Here's the latest.

Sept. 6 — NASCAR Xfinity Series Race at World Wide Technology Raceway, Madison, Ill. Sept. 12 — Food City 300, Bristol, Tenn. Sept. 27 — Kansas Lottery 300, Kansas City, Kan. Oct. 4 — Drive for the ...