It's not clear who was hit hardest by the European fightback at Medinah on Sunday - the US team or the bookmakers.
Westwood: Didn't do the bookies any favours
The visitors were quoted at 33/1 for victory when they trailed 10-4 at one stage during Saturday's fourballs matches, but turned their fortunes around in amazing fashion to defy the odds.
Bet365 spokesman Steve Freeth said: "USA looked home and hosed on Saturday evening but Ian Poulter's heroics gave Europe backers hope and that's when we saw the first signs of belief in a fightback from Olazabal's men at fancy prices.
"With the flying start they made in the singles on Sunday that momentum continued during the day leaving us 'full-up' with money for Europe as punters smashed into the matches, correct score and outright, leaving us with our worst ever golf result."
Bookmakers William Hill were also in shock after seeing the incredible turnaround unfold before their eyes.
"The tie would have been a perfect result, Tiger's missed putt cost us about £100,000 a foot and resulted in probably the biggest swing in golf betting history," said Hills spokesman Rupert Adams.
"Team USA and the British bookies are both licking their wounds."
At Ladbrokes, Europe defied in-play odds of 33/1 with that firm on Saturday evening.
Spokeswoman Jessica Bridge said: "We've never seen such a huge swing in the odds in the history of golf betting. America's name was already being engraved on the Ryder Cup as far as we were concerned, but Europe fought back and defied the odds.
"Poulter's resurrection for Europe saw every man and his dog back the visitors to come away victorious. It's safe to say that Tiger's not on our Christmas card list this year. He's left us penniless but we'll be celebrating empty handed nonetheless."
golf365.com