John Isner was the three-time defending champion, but lost in the final to Nick Kyrgios, 6–7(3–7), 6–7(4–7). Kyrgios was the first non-American winner in the tournament's history.
Seeds
The top four seeds receive a bye into the second round. 
Draw
Key
Finals
Top half
Bottom half
Qualifying
Seeds
Qualifiers
Lucky losers
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
References
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| Grand Slam events |  | 
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| ATP World Tour Masters 1000 |  | 
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| ATP World Tour 500 series | 
- Rotterdam (S, D)
 
- Rio (S, D)
 
- Dubai (S, D)
 
- Acapulco (S, D)
 
- Barcelona (S, D)
 
- London (S, D)
 
- Halle (S, D)
 
- Hamburg (S, D)
 
- Washington D.C. (S, D)
 
- Beijing (S, D)
 
- Tokyo (S, D)
 
- Vienna (S, D)
 
- Basel (S, D)
  
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| ATP World Tour 250 series | 
- Brisbane (S, D)
 
- Chennai (S, D)
 
- Doha (S, D)
 
- Sydney (S, D)
 
- Auckland (S, D)
 
- Montpellier (S, D)
 
- Sofia (S, D)
 
- Quito (S, D)
 
- Buenos Aires (S, D)
 
- Memphis (S, D)
 
- Delray Beach (S, D)
 
- Marseille (S, D)
 
- São Paulo (S, D)
 
- Marrakesh (S, D)
 
- Houston (S, D)
 
- Bucharest (S, D)
 
- Munich (S, D)
 
- Estoril (S, D)
 
- Istanbul (S, D)
 
- Nice (S, D)
 
- Geneva (S, D)
 
- 's-Hertogenbosch (S, D)
 
- Stuttgart (S, D)
 
- Nottingham (S, D)
 
- Newport (S, D)
 
- Båstad (S, D)
 
- Umag (S, D)
 
- Gstaad (S, D)
 
- Kitzbühel (S, D)
 
- Atlanta (, D)
 
- Winston-Salem (S, D)
 
- Metz (S, D)
 
- St. Petersburg (S, D)
 
- Shenzhen (S, D)
 
- Chengdu (S, D)
 
- Stockholm (S, D)
 
- Moscow (S, D)
 
- Antwerp (S, D)
  
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| Team events |  | 
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