2015 Citi Open – Men's Singles
was the defending champion, but chose not to participate this year.
Kei Nishikori won the title, defeating John Isner in the final, 4–6, 6–4, 6–4.Seeds
All seeds receive a bye into the second round.Draw
Finals
Section 2
Section 3
Section 4
Seeds
Qualifiers
- Ivan Dodig
Qualifying draw
Second qualifier
Third qualifier