It was alleged on the back sports page of a Perth newspaper that Anna Kournikova has said that she will never play the Hopman Cup as long as it is held indoors. If the claims are true, then that's a real shame and her loss really. No other player has ever protested to the event being played indoors. It's usually thought to be a good warmup for Melbourne, and has very good word-of-mouth from the players themselves. Anna's alleged claims are also strange considering that she wanted to play the event two years ago.
Anna wanted to play the Hopman Cup at the start of 2000, the year the star players fell by the wayside. Monica Seles was down to play with former champion Justin Gimelstob but her shins were bothering her, and they both subsequently withdrew.
Steffi Graf wanted to make a farewell appearance with a top German male (either Tommy Haas or Nicolas Kiefer) but none were available (Haas reportedly declined the invitation even though he hadn't committed to play any tournaments during the same week at that point, and Keifer was committed to Doha).
And as for Anna herself, she approached Paul MacNamee at the US Open and asked to play for Russia but Paul wasn't able to secure the services of either Yevgeny Kafelnikov or Marat Safin (both were committed to Doha) for her to partner with.
Without the big name players, the highest ranked players that year were Barbara Schett (No. 7) from Austria and Mark Philippoussis (No. 11) of Australia, neither of whom you would consider a marquee name in the same league as Graf, Seles or Kournikova.
The winners that year were South Africa, who had been trying to win the event for nearly seven years. The following year, the stars returned in the form of Hingis, Seles, Gambill, Clijsters, Federer, and Safin.
I can sort of understand Anna's decision of not wanting to play. She must want to play outdoors to get used to the weather conditions, but she had access to the outdoor courts that were available less than 3 minutes away at the State Tennis Centre (most of the players practice and hit up there during the week). And you'd think that playing for your country and staying at a comfortable, luxurious five-star casino-hotel would be an added extra incentive.
No Anna K = no big security freak out = no troublemakers. There is a positive to every negative.