Soccer
The annual earnings for a pro athlete depend on the sport and the level of skill. More skill players earn more money.
If you succeed in a sport, you can take it to the next level by playing pro and getting lots of money.
lacrosse is a pro sport.
For the same reason the anyone becomes profession at their sport... Money, glory, love for the sport.
Music artists and pro sports make the equal amount of money as long as they give something to it, and they do something to earn the money. Is this a good answer? From, Kidskids
Around 1.4m
Pro Athlete
Pro Sport Hockey happened in 1993.
Due to the Depression, pay for pro boxers was very low. The low pay caused the boxers to lose passion for the sport. Sport boxing was boycotted for lack of money to pay boxers.
It depends on which one wins more often.
Pro Sport Hockey was created on 1993-03-06.