Mark Zupan (born May 20, 1975) is a wheelchair rugby player and the captain of the United States wheelchair rugby team which competed in the Paralympic Games in 2004. He is best known for his appearance in the 2005 film Murderball. Zupan was also a part of the 2008 United States gold winning team at the 2008 Beijing Paralympic Games.
See Spinalpedia for more details
and Washington Post for a Q&A with Mark.