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Man who won $1.2M on Tiger's Masters victory is doubling down

David Becker / Getty Images Entertainment / Getty

James Adducci, a 39-year-old man from Wisconsin who pocketed $1.19 million after betting on Tiger Woods to win the Masters, has bet $100,000 of his winnings on Tiger completing a Grand Slam, according to Golf Digest's Stephen Hennessey.

Adducci says the $85,000 he placed on Tiger at 14-1 odds to win the Masters was his first sports bet. He apparently doesn't believe in beginner's luck, as the $100,000 he's now putting on Tiger would net him $10 million.

A golfer completes a Grand Slam after winning each major championship in the same calendar year. Bobby Jones is the only man to accomplish the feat. He did so in 1930 when the U.S. Amateur, the U.S. Open, The Open, and the British Amateur made up the four majors.

Woods won four consecutive majors in a 365-day span earlier in his career, but those victories didn't fall in the same calendar year. The "Tiger Slam" occurred when Woods won the U.S. Open, The Open, and the PGA Championship in 2000, followed by the Masters in 2001.

"Tiger has history winning at Bethpage, and he won at Pebble, by the biggest margin in history," Adducci said. "This is a very unique situation. That's the way I'm thinking about it. We know that with every win, the energy level will get amped up. His game gets elevated. The expectation - does he play well under pressure? He's the definition of excelling under pressure. That's how my brain works."

William Hill U.S. confirmed the bet was placed on Wednesday afternoon at the SLS Casino in Las Vegas, the same sportsbook where Adducci placed and cashed his first bet. His initial wager turned into the biggest futures payout in William Hill's American history. A $10 million reward would be one of the largest in sports-betting history.

Following Adducci's win, a USA Today report revealed he has a long criminal history with multiple domestic violence convictions.

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