NASCAR driver Denny Hamlin suffered a compression fracture in his lower back in the last-lap crash in Fontana, his team said Monday.
Hamlin, who already had a history of back problems, damaged his L1 vertebra after slamming head-on into the inside wall at Auto Club Speedway during Sunday's NASCAR Sprint Cup Series race.
Hamlin, 32, hoped to be released from a nearby hospital Monday to fly home to North Carolina, his team Joe Gibbs Racing said.
The Cup series doesn't race again until April 7, at Martinsville (Va.) Speedway. But it wasn't immediately known whether Hamlin would be able to drive by then or might require surgery.