Not to discourage any teens on this forum who hope to be a ATP pro one day but I was looking up a player who won a local tournament in my area and there's no money to be made in tennis unless you are in the top 200. This player is Evan Song. He's been pro for 8 years or so. He's constantly ranked around the 300s and he's made almost nothing in his career. He won a future tournament and received $3K which was his biggest winning of his career. That $3K he made probably doesn't even cover the travel expenses. It crazy to think he spent all his life on the courts and can't make a living. So I guess you do this to follow your dream and not the money.