It was proved on August 9, 1988, that any player can be traded, even the greatest of his or her sport. On this date, The Great One, Wayne Gretzky, was traded as part of a mega multi-player deal from the Edmonton Oilers to the Los Angeles Kings. Only 27 years old at the time of the trade, and still very much in the prime of his illustrious career, Gretzky proved to be too costly for the small-market Oilers to keep, and this deal -- which landed Edmonton $15 million in cash as part of the return for Gretzky, Marty McSorley and Mike Krushelnyski -- was actually consummated between owners Peter Pocklington (Oilers) and Bruce McNall (Kings), not the general managers. Gretzky's arrival in Los Angeles put the West Coast of the United States on the map as a prime NHL destination and set the stage for further expansion to Anaheim and San Jose, even though the Kings never did win a Stanley Cup with Gretzky on the team. The Oilers, meanwhile, completed their dynasty with another Cup victory in 1990 before the dismantling of the great championship squad was completed in the early '90s.