Crystal ran track and field in the 2004 Olympics and won a gold medal, but was later stripped of it after admitting to doping.
He returned a few years later for All-Stars, and came back nearly two decades later for the iconic Winners At War.
Healers Alan Ball placed 15th on the 35th season of Survivor.
He played as a defenseman for the New York Rangers and Los Angeles Raiders before going on to be a motivational speaker.