Connor Zilisch, Justin Allgaier, Jesse Love and Carson Kvapil will battle for the title on the 1-mile oval in Avondale, Arizona.

Dale Earnhardt Jr. shares his thoughts on Connor Zilisch’s standout 2025 Xfinity Series and the tough championship loss at Phoenix Raceway.

Xfinity, owned by Comcast, is entering its final weekend as the title sponsor of Nascar's second-tier series with O'Reilly Auto Parts taking over.

AVONDALE, Ariz. - Before Kyle Larson and William Byron took to Phoenix Raceway on Saturday to qualify for Sunday's Championship 4 tilt in the NASCAR Cup Series, the Xfinity Series had a little business to take care of in terms of setting the starting lineup for its own finale on Saturday night.

The final four drivers in the 2025 NASCAR Xfinity Series came to Phoenix, ready to put it all on the line. Looking at them, smiling and waving at the crowd, just 30 minutes before the most important race of their lives,

Saturday's Xfinity Series Championship Race will be the final event with Xfinity as the title sponsor for NASCAR's No. 2 series.