"The wager in question involved an obvious pricing error inadvertently generated by our in-game pricing system. Specifically, near the end of the Sunday afternoon game between the Denver Broncos and the Oakland Raiders, the odds for the Broncos (who had the ball and were trailing by two points at the time) to win were +340 (bet $100 to win $340),

The next play, the Broncos completed a 26 yard pass to position themselves to attempt a 36 yard field goal to take the lead in the final seconds of the fourth quarter, clearly positioning the Broncos as the favorite to win. At that moment in the game, our system updated the odds and erroneously posted a price of +75,000 on the Broncos to win the game (bet $100 to win $75,000) when the correct odds for the Broncos to win the game at that point in time were -600 (i.e., bet $600 to win $100). 

A small number of bets were made at the erroneous price over an 18 second period. We honored all such bets on the Broncos to win the game at the accurate market price in accordance with our house rules and industry practice, which specifically address such obvious pricing errors. 

We have reached out to all impacted customers and apologized for the error." -- FanDuel director of publicity Kevin Hennessy