 Unlike in official tournaments, players retiring during or withdrawing before a match are not automatically eliminated from the tournament, and can still participate to the play-offs or the consolation match –as in the 2008 event, when Nikolay Davydenko withdrew due to fatigue before his play-off draw first round match against Brydan Klein, but went on to play and win the play-off draw consolation match against Ivan Ljubičić.Players who decide to withdraw from the competition due to injury are replaced by an alternate for the play-offs or the consolation match –as in the 2006 edition, when David Nalbandian's withdrawal allowed alternate Max Mirnyi to enter the draw.All matches are played in a best-of-three sets with tie-break format.