# 2014 US Open – Boys' singles

Borna Ćorić was the defending champion, having won the event in 2013, but elevated to Men's Singles instead as a qualifier.
Omar Jasika won the title, defeating Quentin Halys in the final, 2–6, 7–5, 6–1.

## Seeds

* Andrey Rublev (quarterfinals)
* Orlando Luz (second round)
* Jared Donaldson (third round)
* Stefan Kozlov (quarterfinals, retired)
* Quentin Halys (final)
* Francis Tiafoe (semifinals)
* Lee Duck-hee (quarterfinals)
* Roman Safiullin (third round)
* Marcelo Zormann (third round)
* Michael Mmoh (first round)
* Jumpei Yamasaki (first round)
* Naoki Nakagawa (first round)
* Matías Zukas (first round)
* Taylor Harry Fritz (third round)
* Francisco Bahamonde (first round)
* Nicolás Álvarez (first round)

## Main 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 | Semifinals | Final | Final | Final | Final | Final |
| 1 | Andrey Rublev | 1 | 7 | 4 | | | | | | | | | | |
| 6 | Frances Tiafoe | 6 | 5 | 6 | | | | | | | | | | |
| 6 | Frances Tiafoe | 6 | 5 | 6 | 6 | Frances Tiafoe | 2 | 6 | 6$^6$ | | | | | |
| | | | | | 5 | Quentin Halys | 6 | 3 | 7$^8$ | | | | | |
| 4 | Stefan Kozlov | 1$^r$ | | | 5 | Quentin Halys | 6 | 3 | 7$^8$ | | | | | |
| 5 | Quentin Halys | 3 | | | | | | | | | | | | |
| 5 | Quentin Halys | 3 | | | | | | | | 5 | Quentin Halys | 6 | 5 | 1 |
| | | | | | | | | | | | Omar Jasika | 2 | 7 | 6 |
| 7 | Lee Duck-hee | 4 | 5 | | | | | | | | | | | | Omar Jasika | 2 | 7 | 6 |
| | Omar Jasika | 6 | 7 | | | | | | | | | | | |
| | Omar Jasika | 6 | 7 | | | Omar Jasika | 6 | 4 | | | | | | |
| | | | | | | Jan Choinski | 3 | 1$^r$ | | | | | | |
| Q | Mikael Ymer | 2 | 6 | 3 | | Jan Choinski | 3 | 1$^r$ | | | | | | |
| | Jan Choinski | 6 | 3 | 6 | | | | | | | | | | |

### Top half
#### Section 1

| 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 | Quarterfinals |
| 1 | Andrey Rublev | 6 | 6 | | | | | | | | | | | | | | | | |
| | Dennis Uspensky | 3 | 0 | | 1 | A Rublev | 6 | 7$^7$ | | | | | | | | | | | |
| LL | Jordi Arconada | 7$^7$ | 6 | | LL | J Arconada | 3 | 6$^3$ | | | | | | | | | | | |
| | Nicolae Frunză | 6$^4$ | 1 | | | | | | | 1 | A Rublev | 6 | 6 | | | | | | |
| | Filippo Baldi | 6$^6$ | 7 | 6 | | | | | | 14 | TH Fritz | 4 | 0 | | | | | | |
| Q | Yusuke Takahashi | 7$^8$ | 5 | 2 | | F Baldi | 0 | 1 | | | | | | | | | | | |
| | Tim van Rijthoven | 3 | 7$^7$ | 5 | 14 | TH Fritz | 6 | 6 | | | | | | | | | | | |
| 14 | Taylor Harry Fritz | 6 | 6$^5$ | 7 | | | | | | | | | | | 1 | A Rublev | 1 | 7 | 4 |
| 9 | Marcelo Zormann | 6 | 6 | | | | | | | | | | | | 6 | F Tiafoe | 6 | 5 | 6 |
| | Logan Smith | 3 | 1 | | 9 | M Zormann | 4 | 6 | 6 | | | | | | | | | | |
| SE | Akira Santillan | 4 | 3 | | | A Biró | 6 | 4 | 2 | | | | | | | | | | |
| | André Biró | 6 | 6 | | | | | | | 9 | M Zormann | 4 | 7 | 3 | | | | | |
| | Ryotaro Matsumura | 2 | 3 | | | | | | | 6 | F Tiafoe | 6 | 5 | 6 | | | | | |
| | Daniel Appelgren | 6 | 6 | | | D Appelgren | 6$^3$ | 0$^r$ | | | | | | | | | | | |
| | Oh Chan-yeong | 2 | 3 | | 6 | F Tiafoe | 7$^7$ | 0 | | | | | | | | | | | |
| 6 | Frances Tiafoe | 6 | 6 | | | | | | | | | | | | | | | | |

#### Section 2

| 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 |
| 4 | Stefan Kozlov | 6 | 6 | | | | | | | | | | | | | | |
| | Jan Zieliński | 2 | 3 | | 4 | S Kozlov | 7$^7$ | 6 | | | | | | | | | |
| | Alex Molčan | 2 | 2 | | | R Matos | 6$^2$ | 4 | | | | | | | | | |
| | Rafael Matos | 6 | 6 | | | | | | | 4 | S Kozlov | 6 | 2 | 6 | | | |
| | Hong Seong-chan | 6 | 6 | | | | | | | | S-c Hong | 3 | 6 | 3 | | | |
| | Andrea Pellegrino | 1 | 1 | | | S-c Hong | 6 | 5 | 6 | | | | | | | | |
| WC | Reilly Opelka | 7$^7$ | 2 | 6 | WC | R Opelka | 3 | 7 | 4 | | | | | | | | |
| 15 | Francisco Bahamonde | 6$^3$ | 6 | 3 | | | | | | | | | | | 4 | S Kozlov | 1$^r$ |
| 12 | Naoki Nakagawa | 2 | 6$^4$ | | | | | | | | | | | | 5 | Q Halys | 3 |
| | Alexander Bublik | 6 | 7$^7$ | | | A Bublik | 6 | 6 | | | | | | | | | |
| WC | Walker Duncan | 3 | 3 | | | JJ Rosas | 2 | 3 | | | | | | | | | |
| | Juan José Rosas | 6 | 6 | | | | | | | | A Bublik | 5 | 6$^0$ | | | | |
| | Nino Serdarušić | 4 | 6 | 3 | | | | | | 5 | Q Halys | 7 | 7$^7$ | | | | |
| | Alex Rybakov | 6 | 3 | 6 | | A Rybakov | 4 | 2 | | | | | | | | | |
| WC | Aron Hiltzik | 5 | 3 | | 5 | Q Halys | 6 | 6 | | | | | | | | | |
| 5 | Quentin Halys | 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 | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 7 | Lee Duck-hee | 3 | 6 | 6 | | | | | | | | | | | | | |
| WC | Sameer Kumar | 6 | 3 | 2 | 7 | D-h Lee | 6 | 6 | | | | | | | | | |
| | Sumit Nagal | 6 | 6 | | | S Nagal | 2 | 2 | | | | | | | | | |
| Q | Viktor Durasovic | 3 | 4 | | | | | | | 7 | D-h Lee | 6 | 6 | | | | |
| | João Menezes | 2 | 7$^7$ | 3 | | | | | | | H Wiersholm | 1 | 2 | | | | |
| | Henrik Wiersholm | 6 | 6$^5$ | 6 | | H Wiersholm | 7 | 6$^6$ | 6 | | | | | | | | |
| | Lucas Miedler | 7$^7$ | 6 | | | L Miedler | 5 | 7$^8$ | 2 | | | | | | | | |
| 11 | Jumpei Yamasaki | 6$^1$ | 4 | | | | | | | | | | | 7 | D-h Lee | 4 | 5 |
| 13 | Matías Zukas | 2 | 4 | | | | | | | | | | | | O Jasika | 6 | 7 |
| | Petros Chrysochos | 6 | 6 | | | P Chrysochos | 3 | 7 | 3 | | | | | | | | |
| | Omar Jasika | 7$^7$ | 7 | | | O Jasika | 6 | 5 | 6 | | | | | | | | |
| WC | Deiton Baughman | 6$^4$ | 5 | | | | | | | | O Jasika | 6 | 6 | | | | |
| | Boris Pokotilov | 1 | 5 | | | | | | | 3 | J Donaldson | 4 | 3 | | | | |
| Q | Simone Roncalli | 6 | 7 | | Q | S Roncalli | 3 | 1 | | | | | | | | | |
| | Pedro Iamachkine | 1 | 0 | | 3 | J Donaldson | 6 | 6 | | | | | | | | | |
| 3 | Jared Donaldson | 6 | 6 | | | | | | | | | | | | | | |

#### Section 4

| 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 | Third round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals |
| 8 | Roman Safiullin | 6 | 6 | | | | | | | | | | | | | | | |
| WC | Tommy Paul | 4 | 3 | | 8 | R Safiullin | 6 | 7 | | | | | | | | | | |
| | Marc Polmans | 7 | 6 | | | M Polmans | 2 | 5 | | | | | | | | | | |
| | Sora Fukuda | 5 | 0 | | | | | | 8 | R Safiullin | 5 | 6 | 2 | | | | | |
| | Hubert Hurkacz | 2 | 2 | | | | | | Q | M Ymer | 7 | 0 | 6 | | | | | |
| Q | Mikael Ymer | 6 | 6 | | Q | M Ymer | 7 | 6 | | | | | | | | | | |
| | Chung Yun-seong | 4 | 6 | 7$^7$ | | Y-s Chung | 5 | 2 | | | | | | | | | | |
| 10 | Michael Mmoh | 6 | 3 | 6$^5$ | | | | | | | | | | Q | M Ymer | 2 | 6 | 3 |
| 16 | Nicolás Álvarez | 2 | 1 | | | | | | | | | | | | J Choinski | 6 | 3 | 6 |
| | Martin Blaško | 6 | 6 | | | M Blaško | 6$^2$ | 0 | | | | | | | | | | |
| Q | Matteo Berrettini | 7$^{13}$ | 5 | 7$^7$ | Q | M Berrettini | 7$^7$ | 6 | | | | | | | | | | |
| WC | Eduardo Nava | 6$^{11}$ | 7 | 6$^3$ | | | | | Q | M Berrettini | 4 | 2 | | | | | | |
| | Jan Choinski | 6 | 6 | | | | | | | J Choinski | 6 | 6 | | | | | | |
| WC | John McNally | 1 | 2 | | | J Choinski | 6 | 6 | | | | | | | | | | |
| Q | Simon Friis Søndergaard | 6$^4$ | 6$^6$ | | 2 | O Luz | 2 | 2 | | | | | | | | | | |
| 2 | Orlando Luz | 7$^7$ | 7$^8$ | | | | | | | | | | | | | | | |