2018 Miami Open – Men's Singles


was the defending champion, but lost in the second round to Thanasi Kokkinakis.
John Isner won his first ATP World Tour Masters 1000 title, defeating Alexander Zverev in the final, 6–7, 6–4, 6–4. Isner became the first new Miami Open champion in 9 years.
Federer and Rafael Nadal were in contention for the ATP No. 1 singles ranking at the start of the tournament. Nadal regained the top ranking as a result of Federer's second round loss.
With Novak Djokovic and Federer losing their opening matches and Andy Murray and Nadal missing the tournament due to injuries, this was the first time since the 2004 Paris Masters that none of the members of the Big Four won a match at a Masters 1000 tournament.

Seeds

All seeds receive a bye into the second round.

Draw

Finals

Top half

Section 1

Section 2

Section 3

Section 4

Bottom half

Section 5

Section 6

Section 7

Section 8

Qualifying

Seeds

Qualifiers

Lucky loser

Qualifying 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