The top four seeds in the Ladies' Singles Championship have advanced to Thursday's semis at Wimbledon: #1 Mauresmo will play #4 Sharapova and #2 Clijsters will take on #3 Henin-Hardenne in an all-Belgian affair. The latter match seems an easy pick, as Henin-Hardenne has dominated her countrywoman on the big occasions. The Mauresmo/Sharapova showdown is harder to call, because both players have shown themselves capable of melting down in big matches. Sharapova has the advantage of having won the title two years ago, but Mauresmo's game and athleticism may be better suited to the surface and she does have some added confidence as the 2006 Aussie Open champ. I'm picking JHH to win it all and complete the career Grand Slam.