I really can't say I despise any player. There are some that I don't like the things they say, like Jelena Dokic. Some I don't always root for, because I don't really like their style of play, are Mauremso, Venus and Martina Hingis. But I respect them all as tennis players.
But despise? Pretty strong word. For me to despise a player they have to do something truly mean and evil and so far I have not seen that from any player.