Bill Klein is a retired American business man and poker player from Laguna Hills, California. Klein sold a grout and thinset mortar manufacturing business and retired after being diagnosed with throat cancer, but has been cancer free for over 15 years. Klein plays about 200 rounds of golf a year, and then half the year in Vegas playing high stakes poker and blackjack. Klein is known for donating all of his winnings to charity, and if he loses, he donates an equal amount as well. Klein’s best score came in 2015 when he finished 2nd in the Big One for One Drop at the WSOP for over $2.46 million.