Wealthy, 41-year-old married women have found their sporting event of choice. (No, Fashion Week doesn't count.)

That's the typical profile of a U.S. Open fan, according to data from a 2009 survey conducted by the U.S. Tennis Association. Women were more likely to attend the Open than men were (53% to 47%), while 56% of all spectators were married. Attendance was pretty evenly split between fans from the metro area (51%) and out-of-towners (49%).

The...