Storylines for this week’s key events at Daytona International Speedway, leading up to the Daytona 500 on Feb. 22:
Duel at Daytona qualifying races, 7 p.m., FS1
NASCAR’s new electronic pit road monitoring system is in place for the first time in Thursday night’s Gatorade Duel qualifying races.
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Xfinity series Florida 300, 3:30 p.m., FS1
Before Chase Elliott replaces Jeff Gordon in the Sprint Cup Series in 2016, he looks to repeat as champion of the Xfinity Series, starting at Daytona.
Daytona 500, 1 p.m., FOX
Kevin Harvick wants another Sprint Cup title. Dale Earnhardt Jr. is still searching for his first. And Jimmie Johnson wants a seventh. The quest begins.