The Kansas City Chiefs and Los Angeles Rams scored a huge victory for bettors Monday night.
According to ESPN.com's Ben Fawkes, William Hill spokesperson Michael Grodsky said the sportsbook suffered a "healthy seven-figure loss" since 69 percent of customers bet the over.
The over/under was set at 64, which was the highest total since at least 1986, per ESPN Stats & Info. The Rams won 54-51 in what was the highest-scoring game in Monday Night Football history.
Monday's contest was the third-highest-scoring game in NFL history, and the Chiefs became the first team to score at least 50 points in a loss.