{| class="wikitable" style="margin-left:1em; text-align:center;"
! style="width:70px;"|Seedning
! style="width:60px;"|Rang.<ref name="wta20180521">Sum af rangeringer på [[WTA's verdensrangliste]] pr. [[21. maj]] [[2018]].</ref>
! Spillere
! Resultat
|-
| '''1'''
| 12
| style="text-align:left; padding-right:20px;"|{{flagikon|HUN|3:2}} [[Tímea Babos]]<br/>{{flagikon|FRA|3:2}} [[Kristina Mladenovic]]
| style="text-align:left; padding-right:20px;"|Kvartfinale
|-
| '''2'''
| 13
| style="text-align:left; padding-right:20px;"|{{flagikon|CZE|3:2}} [[Andrea Sestini Hlaváčková]]<br/>{{flagikon|CZE|3:2}} [[Barbora Strýcová]]
| style="text-align:left; padding-right:20px;"|Semifinale
|-
| '''3'''
| 26
| style="text-align:left; padding-right:20px;"|{{flagikon|SLO|3:2}} [[Andreja Klepač]]<br/>{{flagikon|ESP|3:2}} [[María José Martínez Sánchez]]
| style="text-align:left; padding-right:20px;"|Kvartfinale
|-
| '''4'''
| 28
| style="text-align:left; padding-right:20px;"|{{flagikon|TWN|3:2}} [[Latisha Chan]]<br/>{{flagikon|USA|3:2}} [[Bethanie Mattek-Sands]]
| style="text-align:left; padding-right:20px;"|Anden runde
|-
| '''5'''
| 28
| style="text-align:left; padding-right:20px;"|{{flagikon|CAN|3:2}} [[Gabriela Dabrowski]]<br/>{{flagikon|CHN|3:2}} [[Xu Yifan]]
| style="text-align:left; padding-right:20px;"|Tredje runde
|-
| '''6'''
| 34
| style="text-align:left; padding-right:20px;"|{{flagikon|CZE|3:2}} [[Barbora Krejčíková]]<br/>{{flagikon|CZE|3:2}} [[Kateřina Siniaková]]
| style="text-align:left; padding-right:20px;"|'''Vindere'''
|-
| '''7'''
| 38
| style="text-align:left; padding-right:20px;"|{{flagikon|AUS|3:2}} [[Ashleigh Barty]]<br/>{{flagikon|USA|3:2}} [[CoCo Vandeweghe]]
| style="text-align:left; padding-right:20px;"|Første runde
|-
| '''8'''
| 38
| style="text-align:left; padding-right:20px;"|{{flagikon|TWN|3:2}} [[Chan Hao-Ching]]<br/>{{flagikon|CHN|3:2}} [[Yang Zhaoxuan]]
| style="text-align:left; padding-right:20px;"|Semifinale
|-
| '''9'''
| 42
| style="text-align:left; padding-right:20px;"|{{flagikon|NED|3:2}} [[Kiki Bertens]]<br/>{{flagikon|SWE|3:2}} [[Johanna Larsson]]
| style="text-align:left; padding-right:20px;"|Tredje runde
|-
| '''10'''
| 47
| style="text-align:left; padding-right:20px;"|{{flagikon|LAT|3:2}} [[Jeļena Ostapenko]]<br/>{{flagikon|RUS|3:2}} [[Jelena Vesnina]]
| style="text-align:left; padding-right:20px;"|Første runde
|-
| '''11'''
| 50
| style="text-align:left; padding-right:20px;"|{{flagikon|USA|3:2}} [[Raquel Atawo]]<br/>{{flagikon|GER|3:2}} [[Anna-Lena Grönefeld]]
| style="text-align:left; padding-right:20px;"|Anden runde
|-
| '''12'''
| 53
| style="text-align:left; padding-right:20px;"|{{flagikon|BEL|3:2}} [[Elise Mertens]]<br/>{{flagikon|NED|3:2}} [[Demi Schuurs]]
| style="text-align:left; padding-right:20px;"|Første runde
|-
| '''13'''
| 53
| style="text-align:left; padding-right:20px;"|{{flagikon|USA|3:2}} [[Nicole Melichar]]<br/>{{flagikon|CZE|3:2}} [[Květa Peschke]]
| style="text-align:left; padding-right:20px;"|Tredje runde
|-
| '''14'''
| 84
| style="text-align:left; padding-right:20px;"|{{flagikon|JPN|3:2}} [[Shuko Aoyama]]<br/>{{flagikon|JPN|3:2}} [[Miyu Kato]]
| style="text-align:left; padding-right:20px;"|Første runde
|-
| '''15'''
| 84
| style="text-align:left; padding-right:20px;"|{{flagikon|POL|3:2}} [[Alicja Rosolska]]<br/>{{flagikon|USA|3:2}} [[Abigail Spears]]
| style="text-align:left; padding-right:20px;"|Første runde
|-
| '''16'''
| 91
| style="text-align:left; padding-right:20px;"|{{flagikon|UKR|3:2}} [[Nadiia Kitjenok]]<br/>{{flagikon|AUS|3:2}} [[Anastasia Rodionova]]
| style="text-align:left; padding-right:20px;"|Anden runde
|}
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