Head injuries
FILE - In this Feb. 18, 2001, file photo, Dale Earnhardt waves to fans during race introduction before the start of the Daytona 500 auto race at the Daytona International Speedway in Daytona Beach, Fla. Earnhardt, the greatest stock car star of his era, was killed in a crash on the last turn of the last lap of the race that day as he tried to protect Michael Waltrip's victory (AP Photo/Russell Williams, File)
AP Was There: Earnhardt killed in 2001 Daytona 500 crash

By The Associated Press Feb. 11, 2021 04:31 PM EST

Tony Kanaan (14) drives into Turn 1 followed by Oliver Askew (7) and Charlie Kimball (4) during the IndyCar auto race at World Wide Technology Raceway on Sunday, Aug. 30, 2020, in Madison, Ill. (AP Photo/Jeff Roberson)
IndyCar: Askew sidelined with concussion symptoms, Helio in

By Jenna Fryer Sep. 24, 2020 05:02 PM EDT

Ryan Newman (6) gets turned into the wall by Ryan Blaney (12) as Denny Hamlin (11) misses them along the front stretch to win the NASCAR Daytona 500 auto race at Daytona International Speedway, Monday, Feb. 17, 2020, in Daytona Beach, Fla. (AP Photo/Phelan M. Ebenhack)
Newman suffered head injury, no internal injuries in crash

By Jenna Fryer Feb. 23, 2020 01:53 PM EST