Grand Slam events Tier I tournaments Tier II tournaments Tokyo Indoor (S , D ) Washington (S , D ) Indian Wells (S , D ) Boca Raton (S , D ) Amelia Island (S , D ) Hamburg (S , D ) Eastbourne (S , D ) Manhattan Beach (S , D ) Tokyo (S , D ) Zurich (S , D ) Filderstadt (S , D ) Brighton (S , D ) Oakland (S , D ) Worcester (S , D ) Tier III tournaments Tier IV tournaments Brisbane (S , D ) Wichita (S , D ) Oklahoma City (S , D ) Tokyo (S , D ) Singapore (S , D ) Barcelona (S , D ) Geneva (S , D ) Strasbourg (S , D ) Birmingham (S , D ) Albuquerque (S , D ) Paris (S , D ) Scottsdale (S , D ) Dorado (S , D ) Nashville (S , D ) Indianapolis (S , D ) Tier V tournaments Guarujá (S , D ) Auckland (S , D ) Wellington (S , D ) Taranto (S , D ) Båstad (S , D ) Palermo (S , D ) Estoril (S , D ) Schenectady (S , D ) Kitzbühel (S , D ) Athens (S , D ) Bayonne (S , D ) Moscow (S , D ) Team events