Now, That's Big Win

You, it takes guts to do what Vegas Dave did but he ran into a great deal of good luck and he won almost $2.5 million.
From the Las Vegas Sun: 
When the Kansas City Royals became World Series champions early this morning against the New York Mets in New York, sports bettor Dave Oancea, aka Vegas Dave, made history, and this morning he’ll be at Westgate Las Vegas to collect his $2.5 million win.

It’s an actual $2,457,200 payoff from his $100,000 bet for the largest future bet in the history of sports betting, and his winnings have prompted Westgate to change its policy on accepting his bets. It likely also will change the way casinos do sports betting in no longer accepting extreme odds or allowing repeat bets.

Vegas Dave placed his bet in Week 1 when the odds were 30-1 and bet it all the way down to 8-1, as the Royals hadn’t won a World Series in 30 years. Declining opportunities to cash out and make a guaranteed $750,000, Vegas Dave showed his faith in the MLB team by letting the bet ride.  http://lasvegassun.com/vegasdeluxe/2015/nov/02/vegas-dave-wins-25-million-from-100000-bet-royals-/
And let it ride, he did.
Here is his video: