On September 15, 2009, a cable used to launch trains snapped during the launch on the Xcelerator roller coaster, sending pieces of debris flying and lacerating the left leg of twelve year old Kyle Wheeler. Both the Kyle and another male rider, who complained of back pain, were sent to the hospital. The man was released, but Kyle Wheeler has undergone multiple surgeries to repair the damaged muscle tissue in his leg. Russel Wheeler, the father of Kyle, was sitting beside Kyle when the cable snapped. The Wheeler family won an undisclosed amount of money in a lawsuit against the park. The ride has since been reopened.

Xcelerator is an Intamin AG Accelerator Coaster, located at Knott's Berry Farm in Buena Park, California.