This was the hot topic from the past few days. The guy was sure lucky, there are rumors that it was the banker who bet 51 btc since the max limit for betting in sports was only 10 btc (not sure though). Whatever the truth, congratulations to that guy. He rocks! My bets in sports were lames so I really admire the guy.
Where you get that information from? Limits have been higher than 10 BTC (or at least before today since it seems limits went down) on a lot of games. The 51 BTC is definitely a max bet on that outcome since it's 51.xxxxxxxx BTC and not a flat number.