when he was 17
Wayne Gretzky played 20 seasons in the NHL. He played from 1978 to 1999.
Wayne Gretzky did not play in college. He played for a few different teams in juniors in Canada before the WHA/NHL.
WHA - Indianapolis Racers NHL - Edmonton Oilers
He is a legend in the NHL even better than Wayne Gretzky
20 seasons 1979-1999
season- Wayne Gretzky 92 ever- Wayne Gretzky 892
Gretzky retired in 1999