The NASCAR Cup Series season continues with the Pennzoil 400 at Las Vegas.

Sunday’s Pennzoil 400 at Las Vegas Motor Speedway marked the fifth race of the NASCAR Cup Series season. But as the first true intermediate 1½-mile race of the season, it proved to be a measuring stick moment.

Industry chatter about a possible rift between FOX Sports and NASCAR has circulated in recent months. However, both sides are pushing back against the notion that their long-standing partnership is in trouble.