Just to clarify .. there are only a few things that go into the "earnings" category.
1) Gross Winnings from Ready Go's .. i.e. does not subtract your entry fee
2) Same from weekly / monthly tournements, either free or premium
3) Cash value of any prizes from the weekly / monthly tournaments (example: won a hat that they gave me $15 dollar cash value for)
What is NOT included:
Country club tournaments and Match Play Winnings
The way these guys win all of this is ... they play 8 to 10 (or more) a day and post good scores.
Keep in mind .. this is GROSS earnings. I (for example) have won about $1,200 from ready go's ... but played in 1250 tournaments so NET i am actually down 50 bucks.
Hope that helps.