Bet on the men's US Open Championship with bwin - the iconic hard-court tournament. Held in the latter part of the year, the US Open the fourth and final Grand Slam tournament to be played in a calendar year. The US Open is known for its vocal crowds, which keep the excitement at a fever pitch all tournament long. In recent times the likes of Andy Murray, Rafael Nadal and Roger Federer have won the US Open, who has got what it takes to go that far this year? bwin offers unbeatable markets for the US Open.