Alan Gustafson injured in mountain biking accident

When a crew chief shows up to the track in a sling, it naturally begs the question — what happened?

For Alan Gustafson, crew chief of the No. 9 Hendrick Motorsports Chevrolet for Chase Elliott, that was the reality he was confronted with Friday at Auto Club Speedway after a mountain biking accident.

“I wrecked my mountain bike while riding in Laguna,” Gustafson told NASCAR.com. “It was pretty gnarly. I have a torn AC joint and a hairline fracture in my clavicle, along with no skin left on my arms and elbows.”

After the spill, Gustafson was forced to walk the 2.5 miles back off of the trail, carrying the bike. His next stop was urgent care — and then some sleep.

NASCAR.com