Wayne Gretzky's trade to the Los Angeles Kings made an impact that is being felt in the NHL and elsewhere 30 years later.

The center came from the Edmonton Oilers on Aug. 9, 1988, immediately making hockey cool in Southern California and helping to spark seismic growth and changes in the NHL.  

It was a trade that joined The Great One and Hollywood, giving the sport mainstream appeal in the United States for the first time. 

Here are nine lasting legacies from it: 

 

1. Growth across the United States

At the time of the trade, the Kings were the only U.S.-based NHL team west of Minnesota; the Colorado Rockies became the New Jersey Devils in 1982 and the California Golden Seals became the Cleveland Barons in 1976. Seven California-born players had played at least one NHL game.

Today, the Kings are one of seven U.S.-based teams west of Minnesota, with the potential for an eighth in Seattle soon. The number of California-born players who have played at least one NHL game is up to 44, including 11 last season.

Gretzky's arrival in Los Angeles began a hockey movement that has spread throughout California and well beyond.