Seeds The following are the seeded players. Seedings are based on ATP rankings as of 29 April 2019. Rankings and points before are as of 6 May 2019. † The player did not qualify for the tournament in 2018. Accordingly, points for his 18th best result are deducted instead. The following players would have been seeded, but they withdrew from the event. ‡ The player is entitled to use an exemption to skip the tournament and substitute his 18th best result (45 points) in its stead.
Other entrants The following players received
wildcards into the main draw: •
Félix Auger-Aliassime •
Alejandro Davidovich Fokina •
David Ferrer •
Jaume Munar The following player received entry using a protected ranking into the main draw: •
Jo-Wilfried Tsonga The following players received entry from the qualifying draw: •
Hugo Dellien •
Taylor Fritz •
Pierre-Hugues Herbert •
Hubert Hurkacz •
Martin Kližan •
Reilly Opelka •
Albert Ramos Viñolas The following player received entry as a lucky loser: •
Adrian Mannarino Withdrawals ;Before the tournament •
Kevin Anderson → replaced by
Jan-Lennard Struff •
John Isner → replaced by
Andreas Seppi •
Milos Raonic → replaced by
Radu Albot •
Jo-Wilfried Tsonga → replaced by
Adrian Mannarino ;During the tournament •
Marin Čilić Retirements •
Reilly Opelka ==ATP doubles main-draw entrants==