NASCAR America: Assessing JR Motorsports season so far
JR Motorsports is four races into its first season of fielding four full-time cars with Elliott Sadler, William Byron, Justin Allgaier and Michael Annett.
Last weekend JR Motorsports earned the pole at Phoenix Raceway with the rookie Byron and then won the race with Allgaier.
Sadler left Phoenix still holding the points lead and Byron behind him in second.
NBC Sports analyst Parker Kligerman and Dale Jarrett discuss each driver and analyzes how their seasons are playing out.