One Nevada bettor is going all in on the possibility of Tiger Woods winning this week's Masters. And by all in, we really mean all in—doing so in a way that would result in a record payday from one sportsbook.

William Hill, the London-based casino conglomerate that operates 115 sports books in Nevada and others in states across the country, accepted a $85,000 bet on Tiger Woods to win the Masters at 14-1 from a customer in one of its Nevada books on Tuesday afternoon. We'll save you the math: The payout would be $1,190,000, which now accounts for the largest liability on a single wager in William Hill's U.S. history.

When reached out on the phone on Tuesday evening, William Hill's Director of Trading Nick Bogdanovich said he thought the bettor—whom was likely a first-time customer at the book—had likely made a mistake when entering the wager.

"I thought it was probably an $85 or $8,500 bet," Bogdanovich said. "But they were for real."

Bogdanovich called his boss to discuss the wager before accepting it. Previously, William Hill's largest wager for a golf future was in the $10,000 to $25,000 range from loyal customers at smaller odds, with the largest possible payout being in the $300,000 range, Bogdanovich said.

The Tiger bet blows that out of the water.

The massive wager pushed Tiger's odds down at William Hill to 10-1 at last check, which places his odds behind only favorite Rory McIlroy (7-1) and ties him with Dustin Johnson (also 10-1). Other books still have Tiger listed at 14-1.

Though the Masters always sees the largest amount of money wagered on the year, Bogdanovich called the 2019 Masters a "betting tsunami" for the book, with the massive amount of storylines and increase in sports gambling on the whole.

"The economy's good, sports betting's at an all-time high and we're seeing massive increases in the use of mobile apps," Bogdanovich said. "Plus all the great talent in golf and the storylines, and we're seeing a ton of increased in interest this year."