{| class="wikitable" style="margin-left:1em; text-align:center;"
! style="width:70px;"|Seedning
! style="width:60px;"|Rang.<ref name="wta">[[WTA's verdensrangliste]] pr. [[7. januar]] [[2019]].</ref>
! Spiller
! style="width:90px;"|Resultat
|-
| '''1'''
| 1
| style="text-align:left; padding-right:10px;"|{{flagikon|ROU|3:2}} [[Simona Halep]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''2'''
| 2
| style="text-align:left; padding-right:10px;"|{{flagikon|GER|3:2}} [[Angelique Kerber]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''3'''
| 3
| style="text-align:left; padding-right:10px;"|{{flagikon|DEN|3:2}} [[Caroline Wozniacki]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''4'''
| 4
| style="text-align:left; padding-right:10px;"|{{flagikon|JPN|3:2}} [[Naomi Osaka]]
| style="text-align:left; padding-right:10px;"|'''Mester'''
|-
| '''5'''
| 5
| style="text-align:left; padding-right:10px;"|{{flagikon|USA|3:2}} [[Sloane Stephens]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''6'''
| 6
| style="text-align:left; padding-right:10px;"|{{flagikon|UKR|3:2}} [[Elina Svitolina]]
| style="text-align:left; padding-right:10px;"|Kvartfinale
|-
| '''7'''
| 7
| style="text-align:left; padding-right:10px;"|{{flagikon|CZE|3:2}} [[Karolína Plíšková]]
| style="text-align:left; padding-right:10px;"|Semifinale
|-
| '''8'''
| 8
| style="text-align:left; padding-right:10px;"|{{flagikon|CZE|3:2}} [[Petra Kvitová]]
| style="text-align:left; padding-right:10px;"|Finale
|-
| '''9'''
| 9
| style="text-align:left; padding-right:10px;"|{{flagikon|NED|3:2}} [[Kiki Bertens]]
| style="text-align:left; padding-right:10px;"|Anden runde
|-
| '''10'''
| 10
| style="text-align:left; padding-right:10px;"|{{flagikon|RUS|3:2}} [[Darja Kasatkina]]
| style="text-align:left; padding-right:10px;"|Første runde
|-
| '''11'''
| 11
| style="text-align:left; padding-right:10px;"|{{flagikon|BLR|3:2}} [[Aryna Sabalenka]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''12'''
| 12
| style="text-align:left; padding-right:10px;"|{{flagikon|BEL|3:2}} [[Elise Mertens]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''13'''
| 13
| style="text-align:left; padding-right:10px;"|{{flagikon|LAT|3:2}} [[Anastasija Sevastova]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''14'''
| 14
| style="text-align:left; padding-right:10px;"|{{flagikon|GER|3:2}} [[Julia Görges]]
| style="text-align:left; padding-right:10px;"|Første runde
|-
| '''15'''
| 15
| style="text-align:left; padding-right:10px;"|{{flagikon|AUS|3:2}} [[Ashleigh Barty]]
| style="text-align:left; padding-right:10px;"|Kvartfinale
|-
| '''16'''
| 16
| style="text-align:left; padding-right:10px;"|{{flagikon|USA|3:2}} [[Serena Williams]]
| style="text-align:left; padding-right:10px;"|Kvartfinale
|-
| '''17'''
| 17
| style="text-align:left; padding-right:10px;"|{{flagikon|USA|3:2}} [[Madison Keys]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''18'''
| 18
| style="text-align:left; padding-right:10px;"|{{flagikon|ESP|3:2}} [[Garbiñe Muguruza]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''19'''
| 19
| style="text-align:left; padding-right:10px;"|{{flagikon|FRA|3:2}} [[Caroline Garcia]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''20'''
| 20
| style="text-align:left; padding-right:10px;"|{{flagikon|EST|3:2}} [[Anett Kontaveit]]
| style="text-align:left; padding-right:10px;"|Anden runde
|-
| '''21'''
| 21
| style="text-align:left; padding-right:10px;"|{{flagikon|CHN|3:2}} [[Wang Qiang (tennisspiller)|Wang Qiang]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''22'''
| 22
| style="text-align:left; padding-right:10px;"|{{flagikon|LAT|3:2}} [[Jeļena Ostapenko]]
| style="text-align:left; padding-right:10px;"|Første runde
|-
| '''23'''
| 23
| style="text-align:left; padding-right:10px;"|{{flagikon|ESP|3:2}} [[Carla Suárez Navarro]]
| style="text-align:left; padding-right:10px;"|Anden runde
|-
| '''24'''
| 24
| style="text-align:left; padding-right:10px;"|{{flagikon|UKR|3:2}} [[Lesja Tsurenko]]
| style="text-align:left; padding-right:10px;"|Anden runde
|-
| '''25'''
| 25
| style="text-align:left; padding-right:10px;"|{{flagikon|ROU|3:2}} [[Mihaela Buzărnescu]]
| style="text-align:left; padding-right:10px;"|Første runde
|-
| '''26'''
| 26
| style="text-align:left; padding-right:10px;"|{{flagikon|SVK|3:2}} [[Dominika Cibulková]]
| style="text-align:left; padding-right:10px;"|Første runde
|-
| '''27'''
| 27
| style="text-align:left; padding-right:10px;"|{{flagikon|ITA|3:2}} [[Camila Giorgi]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''28'''
| 28
| style="text-align:left; padding-right:10px;"|{{flagikon|TPE|3:2}} [[Hsieh Su-Wei]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''29'''
| 29
| style="text-align:left; padding-right:10px;"|{{flagikon|CRO|3:2}} [[Donna Vekić]]
| style="text-align:left; padding-right:10px;"|Anden runde
|-
| '''30'''
| 30
| style="text-align:left; padding-right:10px;"|{{flagikon|RUS|3:2}} [[Marija Sjarapova]]
| style="text-align:left; padding-right:10px;"|Fjerde runde
|-
| '''31'''
| 31
| style="text-align:left; padding-right:10px;"|{{flagikon|CRO|3:2}} [[Petra Martić]]
| style="text-align:left; padding-right:10px;"|Tredje runde
|-
| '''32'''
| 32
| style="text-align:left; padding-right:10px;"|{{flagikon|CZE|3:2}} [[Barbora Strýcová]]
| style="text-align:left; padding-right:10px;"|Første runde
|}
Sport