IndyCar rookie Oliver Askew will not compete in next week's doubleheader at Indianapolis because of concussion-like symptoms that date to his crash in the Indianapolis 500 last month.
Arrow McLaren SP will use Helio Castroneves in the No. 7 Chevrolet at Indianapolis.
Askew told The Associated Press on Thursday he has been experiencing dizziness, sleeping difficulties, irritability, headaches and confusion since he crashed late in the Aug. 23 race. He continued to race and tried to "play through it" until friends and family encouraged him to seek medical treatment.
Askew sought treatment at the University of Pittsburgh Medical Center's sports medicine concussion program, the same place NASCAR star Dale Earnhardt Jr.