Chase Elliott overtakes teammate William Byron for the regular-season points lead; here are other playoff story lines to watch this week.

The NASCAR Cup Series returns to the historic Indianapolis Motor Speedway for the Brickyard 400 on Sunday (2 p.m. ET, TNT Sports/truTV, HBO Max, IMS Radio, SiriusXM NASCAR Radio).

Listen in to this preview from Radioactive as Shane van Gisbergen, AJ Allmendinger have early issues at Dover Motor Speedway.

See the full NASCAR Xfinity Series entry list for Saturday's Pennzoil 250 at Indianapolis Motor Speedway (4:30 p.m. ET, The CW).

The "Monster Mile" lived up to its nickhame as a championship measuring stick, and two powerhouse teams took over during Denny Hamlin's win.

Kyle Petty takes a deep dive into Denny Hamlin's winning ways after the driver of the No. 11 JGR Toyota notched another win ...

Denny Hamlin talks about the fine line drivers have to walk when racing teammates after beating both Chase Briscoe and Christopher Bell.

After claiming his 58th career Cup Series victory at Dover, Denny Hamlin shares his goals when looking at the all-time Cup Series wins list.

The NASCAR Inside the Race crew dive deep into Ty Dillon's Cinderella run in the In-Season Challenge after winning the semifinal round.

Alex Weaver, Kyle Petty and Greg Biffle break down Christopher Bell's late-race spin at Dover Motor Speedway while battling Denny Hamlin.

Christopher Bell ended up with an eventful 18th-place finish Sunday, spinning out twice while racing for the lead at Dover ...

Ty Dillon describes the fun he and his No. 10 Kaulig Racing team has been having after advancing to the In-Season Challenge finale.