By Reid Spencer, NASCAR Wire Service
Race for the final two NASCAR Cup Championship 4 spots is wide open
In a tripleheader weekend that will decide the Championship 4 contenders in each of NASCAR’s top three national series, the marquee event is Sunday’s Xfinity 500 NASCAR Cup Series race at Martinsville Speedway (2 p.m. ET on NBC, MRN and SiriusXM NASCAR Radio).
Two-time champion Joey Logano and this season’s Regular Season Champion Tyler Reddick already have qualified for the Nov. 10 Championship 4 event at Phoenix Raceway by virtue of their respective victories at Las Vegas Motor Speedway and Homestead-Miami Speedway in the first two races of the Round of 8.

