On Saturday at Daytona International Speedway, Kurt Busch decided to publicly declare what many have suspected – he has competed in his last NASCAR event.The 2004 Cup Series champion suffered a closed head injury in a wreck during qualifying at Pocono Raceway last July. He hasn't raced since, but has made sponsor and TV appearances while serving as a mentor for drivers Bubba Wallace and Tyler ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/why-retiring-kurt-buschs-career-will-be-defined-by-success-and-resilience/10512931/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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