NASCAR champion Kurt Busch announced his retirement from full-time competition during a news conference at Las Vegas Motor Speedway Saturday morning.

The 2004 Cup Series champion hasn’t raced since suffering a concussion in a July crash at Pocono, Pennsylvania, that eliminated him from the NASCAR playoffs.

Busch, 44, won 34 races during a 23-year career in the marquee Cup Series, including the 2017 Daytona 500.

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Contact Ron Kantowski at [email protected] or 702-383-0352. Follow @ronkantowski on Twitter.