| index Women |
| Tournament | Sur | Final | Winner |
| US Open Women 2018 | OHd | 09.09 | Naomi Osaka |  JPN | 2019 |
| Wimbledon Women 2018 | OGs | 14.07 | Angelique Kerber |  GER | 11 |
| Roland Garros Women 2018 | OCy | 09.06 | Simona Halep |  ROU | 11 |
| Australia Women 2018 | OHd | 28.01 | Caroline Wozniacki |  DEN | 2 |
| Finals |
| Women WTA Championships | IHd | 28.10 | Elina Svitolina |  UKR | 7 |
| Women WTA Elite Trophy |
| WTA Premier Mandatory - 4 Tournaments |
| Women China Open Beijing CHN 2018 | OHd | 07.10 | Caroline Wozniacki | DEN | 2 |
| Women Madrid Open ESP 2018 | OCy | 12.05 | Petra Kvitova |  CZE | 1010 |
| Women Miami Open USA 2018 | OHd | 31.03 | Sloane Stephens | USA | 13 |
| Women Indian Wells Open USA 2018 | OHd | 18.03 | Naomi Osaka | JPN | |
| WTA Premier 5 - 6 Tournaments |
| Women Wuhan Open CHN 2018 | OHd | 29.09 | Aryna Sabalenka |  BLR | |
| Women Cincinnati Open USA 2018 | OHd | 19.08 | Kiki Bertens |  NED | |
| Women Canadian Open 2018 | OHd | 12.08 | Simona Halep | ROU | 1 |
| Women Italian Open 2018 | OCy | 20.05 | Elina Svitolina | UKR | 44 |
| Women Doha QAT 2018 | OHd | 18.02 | Petra Kvitova | CZE | 16 |
| Women St.Petersburg RUS 2018 | IHd | 04.02 | Petra Kvitova | CZE | WC |
| WTA Premier - 10 Tournamemts |
| Women Kremlin Cup 2018 | IHD | 21.10 | Daria Kasatkina |  RUS | 614 |
| Women Tokyo JPN | IHd | 23.09 | Karolina Pliskova | CZE | 4 |
| Women New Haven USA | OHd | 25.08 | Aryna Sabalenka | BLR | |
| Women San Jose USA | OHd | 05.08 | Mihaela Buzarnescu | ROU | 5 |
| Women Eastborne GBR | OGs | 30.06 | Caroline Wozniacki | DEN | 1 |
| Women Birmingham GBR | OGs | 24.06 | Petra Kvitova | CZE | 4 |
| Women Stuttgart GER 2018 | ICy | 29.04 | Karolina Pliskova | CZE | 5 |
| Women Charleston USA 2018 | OGC | 08.04 | Kiki Bertens | NED | 1227 |
| Women Dubai UAE 2018 | OHd | 25.02 | Elina Svitolina | UKR | 1 |
| Women Sydney AUS 2018 | OHd | 13.01 | Angelique Kerber | GER | |
| Women Brisbane AUS 2018 | OHd | 06.01 | Elina Svitolina | UKR | 3 |
| WTA International October |
| Women Luxembourg LUX | IHd | 21.10 | Julia Goerges | GER | 19 |
| Women Tianjin CHN | OHd | 14.10 | Caroline Garcia |  FRA | 216 |
| Women Hong Kong HKG | OHd | 14.10 | Dayana Yastremska | UKR | 102 |
| Women Linz AUT | IHd | 14.10 | Camila Giorgi |  ITA | 532 |
| September |
| Women Tashkent UZB | OHd | 29.09 | Margarita Gasparyan | RUS | |
| Women Guangzhou CHN | OHd | 23.09 | Qiang Wang |  CHN | 3 |
| Women Seoul KOR | OHd | 23.09 | Kiki Bertens | NED | 2 |
| Women Hiroshima JPN | OHd | 16.09 | Su-Wei Hsieh |  TPE | 2 |
| Women Quebec City CAN | IHd | 16.09 | Pauline Parmentier | FRA | 8 |
| August |
| Women Washington USA | OHd | 05.08 | Svetlana Kuznetsova | RUS | |
| July |
| Women Moscow I RUS | OCy | 29.07 | Olga Danilovic |  SRB | LL |
| Women Nanchang CHN | OHd | 29.07 | Qiang Wang | CHN | 2 |
| Women Gstaad SUI | OCy | 22.07 | Alize Cornet | FRA | 1 |
| Women Bucharest ROU | OCy | 22.07 | Anastasija Sevastova |  LAT | 1 |
| June |
| Women Mallorca ESP | OGs | 24.06 | Tatjana Maria | GER | |
| Women Nottingham GBR | OGs | 17.06 | Ashleigh Barty |  AUS | 1 |
| Women s-Hertogenbosch NED | OGs | 17.06 | Aleksandra Krunic | SRB | 7 |
| May |
| Women Nuremberg GER | OCy | 27.05 | Johanna Larsson |  SWE | 97 |
| Women Strasbourg FRA | OCy | 27.05 | Anastasia Pavlyuchenkova | RUS | 331 |
| Women Prague CZE | OCy | 05.05 | Petra Kvitova | CZE | 2 |
| Women Rabat MOR | OCy | 05.05 | Elise Mertens |  BEL | 1 |
| Women Anning CHN | OCy | 05.05 | Irina Khromacheva | RUS | |
| April |
| Women Istanbul TUR | OCy | 29.04 | Pauline Parmentier | FRA | |
| Women Bogota COL | OCy | 15.04 | Anna Schmiedlova |  SVK | 132 |
| Women Lugano SUI | OCy | 15.04 | Elise Mertens | BEL | 2 |
| Women Monterrey MEX | OHd | 08.04 | Garbine Muguruza |  ESP | 13 |
| March |
| Women Acapulco MEX | OHd | 03.03 | Lesia Tsurenko | UKR | 7 |
| February |
| Women Budapest HUN | IHd | 25.02 | Alison Van Uytvanck | BEL | |
| Women Taipei TPE | IHd | 04.02 | Timea Babos |  HUN | 4 |
| January |
| Women Hobart AUS | OHd | 13.01 | Elise Mertens | BEL | 2 |
| Women Auckland NZL | OHd | 07.01 | Julia Goerges | GER | 2 |
| Women Shenzhen CHN | OHd | 06.01 | Simona Halep | ROU | 1 |
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