What year did Wayne Gretzky's professional hockey career start?

More Questions:

In soccer, how many yellow cards result in the ejection of a player from the game?

What was Domino's Pizza originally called?

Who was the last tennis player to win a Grand Slam using a wooden racquet?

What is the Northern Tropic also called?

In what US state would you find Fort McHenry?

What country borders only Brazil, Argentina, and the Atlantic Ocean?

What is the purpose of "seeding" a cloud?

What is sulphur also known as?

What is tramp's nickname for the lady in "Lady and the Tramp"?

In 2001, who gave the first concert in Oslo's Vallhall football arena?

What actor plays neurosurgeon Dr. Derek Shepherd in the TV show "Grey’s Anatomy"?

What label owns the rights to every Elvis recording ever made

Which US president lived in Mount Vernon?

What character, created by A. A. Milne, loves watercress?

In which European country would you find the Tokaj wine region?