Most sports betting providers offer bonus actions to new customers, where they have a certain amount or percentage of the money paid in as a bonus. These promotions you can use in order to experience or, even with your frees, win a lot of money with a small pay-in. Often you get a bonus up to 200%. So with your first deposit you have your capital tripled. Now you just have to place your bet clever and smart and your first win is nothing in the way. Have fun.