What is Made It?
1.
a slang term to describe a successful professional sports gambler.
a person who made it usually have vast knowledge of the sports he bets on; look for the best odds among the sports books and have excellent money management skills.
The term was introduced by a Canadian poster, fiveteamer, who also made a list of successful professional sports gambler on online gambling forum.
Justin is a pro, so he definitely made it.
See