2018 Western & Southern Open – Men's Singles


was the defending champion, but lost to Novak Djokovic in the third round.
Djokovic went on to become the first player to win all nine ATP Masters 1000 events since its inception in 1990, defeating Roger Federer in the final, 6–4, 6–4.

Seeds

The top eight seeds receive 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

Qualifying draw

First qualifier

Second qualifier

Third qualifier

Fourth qualifier

Fifth qualifier

Sixth qualifier

Seventh qualifier