Hammer was near Ebensburg, Pa. when he received a phone call that the day's races at Indiana were canceled. Shortly after turning around and heading to his home training center in Bedford, Pa., Hammer's truck and trailer were struck by a tanker truck.
A report from the scene said that the truck was totaled, and the trailer, containing six horses, may have tipped. One horse had a minor cut, the rest were uninjured. Horseman Todd Schadel, Hammer's partner on Vivid Photo, arrived on the scene later and transported the horses back to Bedford, along with Vicki Fair. Fair, who owns horses with Hammer, was also in the truck but was uninjured.
Vickie Mock, a caretaker for the Hammer Stable, was the third passenger. She was taken to a local hospital with possible broken ribs.
Hammer refused treatment at the scene.