Barry Greenstein is nicknamed the “Robin Hood of Poker,” because he donates his tournament winnings to charity. Over the years, he has provided more than $5.5 million in support of his favorite causes. These cashes include numerous ones on the World Poker Tour, including two titles. At the World Series of Poker, he has cashed more than 30 times and owns two bracelets.

Born in Chicago, Illinois, in 1955, Greenstein has been playing cards since the age of 12. He began by playing gin rummy and hearts, and eventually poker. He managed to win enough to pay for college by playing cards with local businessmen. He graduated, and then spent a decade earning a graduate degree in mathematics. Finding that poker was much more lucrative than a job in his profession, he decided to dedicate himself to the game. He now competes in the highest cash games and richest tournaments in the world.

Greenstein represents PokerStars as a member of its team. In addition to being a successful player and philanthropist, he has also written a book, Ace on the River. He gives anyone who knocks him out of a tournament a signed copy.