# 2016 Citi Open – Men's singles

Kei Nishikori was the defending champion, but chose not to participate this year. Second-seeded Gaël Monfils won the title, defeating Ivo Karlović in the final: 5–7, 7–6$^{(8–6)}$, 6–4.

## Seeds

All seeds receive a bye into the second round.
    01. John Isner (quarterfinals)
    02. Gaël Monfils (champion)
    03. Bernard Tomic (third round)
    04. Benoît Paire (quarterfinals)
    05. Steve Johnson (semifinals)
    06. Jack Sock (quarterfinals)
    07. Alexander Zverev (semifinals)
    08. Sam Querrey (quarterfinals)
    09. Kevin Anderson (second round)
    10. Viktor Troicki (second round)
    11. Alexandr Dolgopolov (third round)
    12. Grigor Dimitrov (second round)
    13. Ivo Karlović (final)
    14. Gilles Müller (third round)
    15. Marcos Baghdatis (third round)
    16. Borna Ćorić (third round)
Click on the seed number of a player to go to their draw section.

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
| 1 | John Isner | 6$^7$ | 6$^{15}$ | | | | | | | | | | |
| 5 | Steve Johnson | 7$^9$ | 7$^{17}$ | | | | | | | | | | |
| 5 | Steve Johnson | 7$^9$ | 7$^{17}$ | | 5 | Steve Johnson | 4 | 4 | | | | | |
| | | | | | 13 | Ivo Karlović | 6 | 6 | | | | | |
| 13 | Ivo Karlović | 7$^7$ | 7$^8$ | | 13 | Ivo Karlović | 6 | 6 | | | | | |
| 6 | Jack Sock | 6$^4$ | 6$^6$ | | | | | | | | | | |
| 6 | Jack Sock | 6$^4$ | 6$^6$ | | | | | | 13 | Ivo Karlović | 7 | 6$^6$ | 4 |
| | | | | | | | | | 2 | Gaël Monfils | 5 | 7$^8$ | 6 |
| 7/WC | Alexander Zverev | 6 | 6 | | | | | | | | | | | 2 | Gaël Monfils | 5 | 7$^8$ | 6 |
| 4 | Benoît Paire | 1 | 3 | | | | | | | | | | |
| 4 | Benoît Paire | 1 | 3 | | 7/WC | Alexander Zverev | 4 | 0 | | | | | |
| | | | | | 2 | Gaël Monfils | 6 | 6 | | | | | |
| 8 | Sam Querrey | 4 | 6 | 1 | 2 | Gaël Monfils | 6 | 6 | | | | | |
| 2 | Gaël Monfils | 6 | 3 | 6 | | | | | | | | | |

### Top half
#### Section 1

| First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | 1 | J Isner | 6 | 6 | | | | | | | | |
| Q | J Duckworth | 7 | 6 | Q | J Duckworth | 3 | 4 | | | | | | | | |
| | T Smyczek | 5 | 1 | | | | | 1 | J Isner | 7$^7$ | 6 | | | | |
| | D Kudla | 5 | 0 | | | | | 15 | M Baghdatis | 6$^3$ | 2 | | | | |
| | J Millman | 7 | 6 | | J Millman | 2 | 4 | | | | | | | | |
| | | | | 15 | M Baghdatis | 6 | 6 | | | | | | | | |
| | | | | | | | | | | | | 1 | J Isner | 6$^7$ | 6$^{15}$ |
| | | | | | | | | | | | | 5 | S Johnson | 7$^9$ | 7$^{17}$ |
| | | | | 10 | V Troicki | 6$^4$ | 4 | | | | | | | | |
| Q | R Harrison | 7$^7$ | 6 | Q | R Harrison | 7$^7$ | 6 | | | | | | | | |
| | S Robert | 6$^1$ | 3 | | | | | Q | R Harrison | 4 | 4 | | | | |
| | A Mannarino | 7$^7$ | 7 | | | | | 5 | S Johnson | 6 | 6 | | | | |
| WC | F Tiafoe | 6$^4$ | 5 | | A Mannarino | 3 | 4 | | | | | | | | |
| | | | | 5 | S Johnson | 6 | 6 | | | | | | | | |

#### Section 2

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 3 | B Tomic | 7$^7$ | 6 | | | | | | | | |
| | D Young | 6 | 3 | 6 | | D Young | 6$^4$ | 3 | | | | | | | | |
| Q | E Escobedo | 4 | 6 | 3 | | | | | 3 | B Tomic | 6$^4$ | 3 | | | | |
| | S Groth | 6$^3$ | 6$^5$ | | | | | | 13 | I Karlović | 7$^7$ | 6 | | | | |
| PR | B Baker | 7$^7$ | 7$^7$ | | PR | B Baker | 3 | 6$^4$ | | | | | | | | |
| | | | | | 13 | I Karlović | 6 | 7$^7$ | | | | | | | | |
| | | | | | | | | | | | | | 13 | I Karlović | 7$^7$ | 7$^8$ |
| | | | | | | | | | | | | | 6 | J Sock | 6$^4$ | 6$^6$ |
| | | | | | 12 | G Dimitrov | 4 | 4 | | | | | | | | |
| | D Evans | 6 | 6 | | | D Evans | 6 | 6 | | | | | | | | |
| | B Becker | 2 | 1 | | | | | | | D Evans | 1 | 5 | | | | |
| | L Lacko | 7$^7$ | 4 | 6 | | | | | 6 | J Sock | 6 | 7 | | | | |
| WC | D Shapovalov | 6$^3$ | 6 | 4 | | L Lacko | 6$^1$ | 4 | | | | | | | | |
| | | | | | 6 | J Sock | 7$^7$ | 6 | | | | | | | | |

### Bottom half
#### Section 3

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 7/WC | A Zverev | 6 | 6 | | | | | | | | | | |
| | D Sela | 4 | 3 | | | T Fritz | 4 | 2 | | | | | | | | | | |
| | T Fritz | 6 | 6 | | | | | | | 7/WC | A Zverev | 6 | 5 | 6 | | | | |
| WC | R Opelka | 7$^7$ | 6$^4$ | 6$^3$ | | | | | | | M Jaziri | 2 | 7 | 2 | | | | |
| | M Jaziri | 6$^4$ | 7$^7$ | 7$^7$ | | M Jaziri | 5 | 6 | 7$^7$ | | | | | | | | | |
| | | | | | 9 | K Anderson | 7 | 4 | 6$^3$ | | | | | | | | | |
| | | | | | | | | | | | | | | | 7/WC | A Zverev | 6 | 6 |
| | | | | | | | | | | | | | | | 4 | B Paire | 1 | 3 |
| | | | | | 14 | G Müller | 6 | 6 | | | | | | | | | | |
| | Y Nishioka | 6 | 4 | | | Y Nishioka | 4 | 1 | | | | | | | | | | |
| | I Dodig | 2 | 2$^r$ | | | | | | | 14 | G Müller | 2 | 6 | 6$^4$ | | | | |
| Q | V Millot | 7 | 2 | 4 | | | | | | 4 | B Paire | 6 | 3 | 7$^7$ | | | | |
| Q | J Donaldson | 5 | 6 | 6 | Q | J Donaldson | 0 | 5 | | | | | | | | | | |
| | | | | | 4 | B Paire | 6 | 7 | | | | | | | | | | |

#### Section 4

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Third round | Third round | Third round | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| | | | | | 8 | S Querrey | 6$^5$ | 6 | 6 | | | | | | | | | |
| Q | A Kuznetsov | 6 | 2 | 4 | | B Fratangelo | 7$^7$ | 4 | 4 | | | | | | | | | |
| | B Fratangelo | 4 | 6 | 6 | | | | | | 8 | S Querrey | 7$^7$ | 6 | | | | | |
| | J Thompson | 6 | 6 | | | | | | | 11 | A Dolgopolov | 6$^5$ | 3 | | | | | |
| | V Estrella Burgos | 3 | 2 | | | J Thompson | 4 | 6 | 6$^4$ | | | | | | | | | |
| | | | | | 11 | A Dolgopolov | 6 | 1 | 7$^7$ | | | | | | | | | |
| | | | | | | | | | | | | | | 8 | S Querrey | 4 | 6 | 1 |
| | | | | | | | | | | | | | | 2 | G Monfils | 6 | 3 | 6 |
| | | | | | 16 | B Ćorić | 6 | 6 | | | | | | | | | | |
| | Y Sugita | 1 | 6 | 7$^7$ | | Y Sugita | 4 | 4 | | | | | | | | | | |
| | V Pospisil | 6 | 2 | 6$^4$ | | | | | | 16 | B Ćorić | 2 | 3 | | | | | |
| | A Krajicek | 1 | 6$^3$ | | | | | | | 2 | G Monfils | 6 | 6 | | | | | |
| | Y-h Lu | 6 | 7$^7$ | | | Y-h Lu | 3 | 2 | | | | | | | | | | |
| | | | | | 2 | G Monfils | 6 | 6 | | | | | | | | | | |

## Qualifying
### Seeds

The top four seeds received a bye into the qualifying competition.
* Dennis Novikov (qualifying competition)
* Vincent Millot (qualified)
* Jared Donaldson (qualified)
* Ryan Harrison (qualified)
* Matthew Barton (qualifying competition)
* James Duckworth (qualified)
* Alexander Sarkissian (qualifying competition)
* Amir Weintraub (qualifying competition)
* Alejandro Falla (qualifying competition, retired)
* Ernesto Escobedo (qualified)
* Marinko Matosevic (qualifying competition)
* Alex Kuznetsov (qualified)

### Qualifiers

* Ernesto Escobedo
* Vincent Millot
* Jared Donaldson
* Ryan Harrison
* Alex Kuznetsov
* James Duckworth

### Qualifying draw
#### First qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 1 | Dennis Novikov | 6$^3$ | 4 |
| WC | Leon Vessels | 1 | 1 | 10 | Ernesto Escobedo | 7$^7$ | 6 |
| 10 | Ernesto Escobedo | 6 | 6 | | | | |

#### Second qualifier

| First round | First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | | 2 | Vincent Millot | 6$^3$ | 7 | 4 |
| | Mackenzie McDonald | 3 | 6 | 6$^4$ | 9 | Alejandro Falla | 7$^7$ | 5 | 1$^r$ |
| 9 | Alejandro Falla | 6 | 3 | 7$^7$ | | | | | |

#### Third qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 3 | Jared Donaldson | 7$^{11}$ | 6 |
| Alt | Scott Lipsky | 1 | 0 | 11 | Marinko Matosevic | 6$^9$ | 4 |
| 11 | Marinko Matosevic | 6 | 6 | | | | |

#### Fourth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| | | | | 4 | Ryan Harrison | 6 | 6 |
| WC | Ryan Shane | 4 | 2 | 8 | Amir Weintraub | 4 | 3 |
| 8 | Amir Weintraub | 6 | 6 | | | | |

#### Fifth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 5 | Matthew Barton | 6 | 6 | | | | |
| WC | Nikita-Girey Demir | 0 | 1 | | | | |
| WC | Nikita-Girey Demir | 0 | 1 | 5 | Matthew Barton | 4 | 3 |
| | | | | 12 | Alex Kuznetsov | 6 | 6 |
| Alt | Eric Butorac | 2 | 2 | 12 | Alex Kuznetsov | 6 | 6 |
| 12 | Alex Kuznetsov | 6 | 6 | | | | |

#### Sixth qualifier

| First round | First round | First round | First round | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition | Qualifying competition |
| 6 | James Duckworth | 6 | 6 | | | | | |
| WC | Ulises Blanch | 1 | 4 | | | | | |
| WC | Ulises Blanch | 1 | 4 | 6 | James Duckworth | 4 | 7$^7$ | 6 |
| | | | | 7 | Alexander Sarkissian | 6 | 6$^5$ | 2 |
| | Nathan Pasha | 1 | 1 | 7 | Alexander Sarkissian | 6 | 6$^5$ | 2 |
| 7 | Alexander Sarkissian | 6 | 6 | | | | | |