Tempers boiled over in the aftermath of the pair’s controversial crash in the closing stages of the Cup Series’ first traditional Chase race at Bristol, triggering a post-race confrontation on pit road that immediately turned physical.

Jonathan Hassler will always be known as the crew chief who guided Ryan Blaney to his first NASCAR Cup Series championship.It was eight years in the making for Blaney. For Hassler, it was his second as a crew chief in NASCAR’s top series. But his presence in the sport and...