Gretzky won one gold medal, but only as the general manager of Team Canada. NHLers did not start playing in the Olympics until near the end of his career.
Yes, Wayne Gretzky did play on NHL teams, 4 to be exact. He started his NHL Career with the Edmonton Oilers from 1979 to 1988. He was then traded to the Los Angeles Kings where he played for 7 seasons. in the middle of the 1995-1996 season, he was traded to the St. Louis Blues where he played the remainder of the season. He singed with the New York Rangers the next season where he would retire at the end of the 1999 season.
Wayne Corporation ended in 1992.
Philadelphia Classic ended in 1997.
Xerox Classic ended in 2008.
Alberta Classic ended in 2005.
Classic Haribo ended in 2006.
Lakeland Classic ended in 2000.
Coors Classic ended in 1988.
Colorado Classic ended in 1997.
Colliers Classic ended in 2007.
The Jamaica Classic ended in 1991.