2018 Western & Southern Open – Women's Singles


was the defending champion, but lost in the second round to Lesia Tsurenko.
Kiki Bertens, en route to her first hard court & Premier 5 level title, defeated the world no. 2 & no. 1 players, in the second round and final respectively. She became the first Dutch woman to win a title in Cincinnati by defeating Simona Halep in the final, 2–6, 7–6, 6–2.

Seeds

The top eight seeds received a bye into the second round.

Draw

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4

Qualifying

Seeds

Qualifiers

Lucky Loser

Draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

Fifth qualifier

Sixth qualifier

Seventh qualifier

Eighth qualifier

Ninth qualifier

Tenth qualifier

Eleventh qualifier

Twelfth qualifier