Ryan Truex was hospitalized after crashing his car in practice Saturday at Michigan International Speedway, according to NASCAR.
Truex's No. 83 Toyota slammed into the wall during the first of two practice sessions at the track, causing damage to the right front of the car. Truex climbed out of the car and walked with safety personnel to a waiting ambulance.
BK Racing representatives said Truex complained of a headache and shoulder pain.
Truex is ranked 37th in Sprint Cup points and has started 19 of 22 races this season. His best finish was 20th at Pocono Raceway two weeks ago.
Jeff Gordon won the pole Friday with a track-record lap at 206.558 mph. The Pure Michigan 400 is Sunday.