He played for EC Graz Austria in 1997 - 98 .
Gretzky was a career minor leaguer , floating between the International Hockey League , the American Hockey League , and the United Hockey League .
Gretzky played for EC Graz Austria in 1997 - 98 .
Gretzky was a career minor leaguer , floating between the International Hockey League , the American Hockey League , and the United Hockey League .