The Fawcett Society celebrates the fact that the Wimbledon championship starting today will pay male and female champions equally.
Surreptitious Evil points to one flaw in this - people pay less to watch women's tennis.
This new paper (pdf) by Marco Daniele Paserman adds another problem - that the women's game is just not as good as the men's, in the sense that women fall apart under pressure:
This paper uses data from nine tennis Grand Slam tournaments played between 2005 and 2007 to assess whether men and women respond differently to competitive pressure in a setting with large monetary rewards....The detailed point-by-point analysis reveals that, relative to men, women are substantially more likely to make unforced errors at crucial junctures of the match. Data on serve speed, on first serve percentages and on rally length suggest that women play a more conservative and less aggressive strategy as points become more important.