Giải quần vợt Mỹ Mở rộng 2019 - Đơn nam trẻ

Jonáš Forejtek
| runner = Emilio Nava
| score = 6–7(7–4), 6–0, 6–2
| before_name = US Open – Boys' Singles
| before_name = Giải quần vợt Mỹ Mở rộng - Đơn nam trẻ
| after_name = Giải quần vợt Mỹ Mở rộng - Đơn nam trẻ
}}

Thiago Seyboth Wild là đương kim vô địch, nhưng không còn đủ điều kiện tham gia giải trẻ.
Jonáš Forejtek giành chức vô địch năm 2019, sau khi đánh bại Emilio Nava 6–7(7–4), 6–0, 6–2.

Hạt giống
Shintaro Mochizuki (Vòng 2)
Holger Vitus Nødskov Rune (Vòng 2)
Martin Damm (Vòng 2)
Jonáš Forejtek
Thiago Agustín Tirante (Vòng 2, bỏ cuộc)
Toby Kodat (Vòng 2)
Harold Mayot (Vòng 2)
Emilio Nava

Gauthier Onclin
Liam Draxl
Brandon Nakashima
Shunsuke Mitsui (Vòng 1)
Keisuke Saitoh (Vòng 1)
Valentin Royer
Jiří Lehečka
Péter Makk
}}

Vòng loại

Bốc thăm vòng đấu chính

Vòng chung kết
Valentin Royer
| RD1-score1-1=4
| RD1-score1-2=4
| RD1-score1-3=
| RD1-seed2=11
| RD1-team2= Brandon Nakashima
| RD1-score2-1=6
| RD1-score2-2=6
| RD1-score2-3=

| RD1-seed3=4
| RD1-team3= Jonáš Forejtek
| RD1-score3-1=3
| RD1-score3-2=7
| RD1-score3-3=7
| RD1-seed4=Q
| RD1-team4= Milan Welte
| RD1-score4-1=6
| RD1-score4-2=5
| RD1-score4-3=5

| RD1-seed5=8/WC
| RD1-team5= Emilio Nava
| RD1-score5-1=6
| RD1-score5-2=6
| RD1-score5-3=
| RD1-seed6=15
| RD1-team6= Jiří Lehečka
| RD1-score6-1=3
| RD1-score6-2=1
| RD1-score6-3=

| RD1-seed7=
| RD1-team7= Cannon Kingsley
| RD1-score7-1=77
| RD1-score7-2=6
| RD1-score7-3=
| RD1-seed8=
| RD1-team8= Dominic Stephan Stricker
| RD1-score8-1=63
| RD1-score8-2=4
| RD1-score8-3=

| RD2-seed1=11
| RD2-team1= Brandon Nakashima
| RD2-score1-1=64
| RD2-score1-2=3
| RD2-score1-3=
| RD2-seed2=4
| RD2-team2= Jonáš Forejtek
| RD2-score2-1=77
| RD2-score2-2=6
| RD2-score2-3=

| RD2-seed3=8/WC
| RD2-team3= Emilio Nava
| RD2-score3-1=6
| RD2-score3-2=6
| RD2-score3-3=
| RD2-seed4=
| RD2-team4= Cannon Kingsley
| RD2-score4-1=4
| RD2-score4-2=0
| RD2-score4-3=

| RD3-seed1=4
| RD3-team1= Jonáš Forejtek
| RD3-score1-1=64
| RD3-score1-2=6
| RD3-score1-3=6
| RD3-seed2=8/WC
| RD3-team2= Emilio Nava
| RD3-score2-1=77
| RD3-score2-2=0
| RD3-score2-3=2
}}

Nửa trên

Nhánh 1
Shintaro Mochizuki
| RD1-score01-1=2
| RD1-score01-2=6
| RD1-score01-3=6
| RD1-seed02=
| RD1-team02= Flavio Cobolli
| RD1-score02-1=6
| RD1-score02-2=3
| RD1-score02-3=4

| RD1-seed03=Q
| RD1-team03= Blaise Bicknell
| RD1-score03-1=63
| RD1-score03-2=3
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= Alejo Lorenzo Lingua Lavallén
| RD1-score04-1=77
| RD1-score04-2=6
| RD1-score04-3=

| RD1-seed05=Q
| RD1-team05= Andrew Paulson
| RD1-score05-1=6
| RD1-score05-2=5
| RD1-score05-3=6
| RD1-seed06=
| RD1-team06= Francesco Passaro
| RD1-score06-1=3
| RD1-score06-2=7
| RD1-score06-3=3

| RD1-seed07=WC
| RD1-team07= Leighton Allen
| RD1-score07-1=3
| RD1-score07-2=66
| RD1-score07-3=
| RD1-seed08=14
| RD1-team08= Valentin Royer
| RD1-score08-1=6
| RD1-score08-2=78
| RD1-score08-3=

| RD1-seed09=11
| RD1-team09= Brandon Nakashima
| RD1-score09-1=6
| RD1-score09-2=6
| RD1-score09-3=
| RD1-seed10=
| RD1-team10= Kyrian Jacquet
| RD1-score10-1=3
| RD1-score10-2=1
| RD1-score10-3=

| RD1-seed11=
| RD1-team11= Youcef Rihane
| RD1-score11-1=4
| RD1-score11-2=4
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= Leandro Riedi
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= Tristan Schoolkate
| RD1-score13-1=6
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= Nicholas David Ionel
| RD1-score14-1=2
| RD1-score14-2=3
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Tyler Zink
| RD1-score15-1=63
| RD1-score15-2=0
| RD1-score15-3=
| RD1-seed16=7
| RD1-team16= Harold Mayot
| RD1-score16-1=77
| RD1-score16-2=6
| RD1-score16-3=

| RD2-seed01=1
| RD2-team01= S Mochizuki
| RD2-score01-1=6
| RD2-score01-2=66
| RD2-score01-3=2
| RD2-seed02=
| RD2-team02= AL Lingua Lavallén
| RD2-score02-1=4
| RD2-score02-2=78
| RD2-score02-3=6

| RD2-seed03=Q
| RD2-team03= A Paulson
| RD2-score03-1=2
| RD2-score03-2=4
| RD2-score03-3=
| RD2-seed04=14
| RD2-team04= V Royer
| RD2-score04-1=6
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=11
| RD2-team05= B Nakashima
| RD2-score05-1=6
| RD2-score05-2=3
| RD2-score05-3=6
| RD2-seed06=
| RD2-team06= L Riedi
| RD2-score06-1=4
| RD2-score06-2=6
| RD2-score06-3=2

| RD2-seed07=
| RD2-team07= T Schoolkate
| RD2-score07-1=6
| RD2-score07-2=6
| RD2-score07-3=
| RD2-seed08=7
| RD2-team08= H Mayot
| RD2-score08-1=3
| RD2-score08-2=4
| RD2-score08-3=

| RD3-seed01=
| RD3-team01= AL Lingua Lavallén
| RD3-score01-1=3
| RD3-score01-2=4
| RD3-score01-3=
| RD3-seed02=14
| RD3-team02= V Royer
| RD3-score02-1=6
| RD3-score02-2=6
| RD3-score02-3=

| RD3-seed03=11
| RD3-team03= B Nakashima
| RD3-score03-1=6
| RD3-score03-2=6
| RD3-score03-3=
| RD3-seed04=
| RD3-team04= T Schoolkate
| RD3-score04-1=1
| RD3-score04-2=4
| RD3-score04-3=

| RD4-seed01=14
| RD4-team01= V Royer
| RD4-score01-1=4
| RD4-score01-2=4
| RD4-score01-3=
| RD4-seed02=11
| RD4-team02= B Nakashima
| RD4-score02-1=6
| RD4-score02-2=6
| RD4-score02-3=
}}

Nhánh 2
Jonáš Forejtek
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3=
| RD1-seed02=WC
| RD1-team02= Zachary Svajda
| RD1-score02-1=3
| RD1-score02-2=3
| RD1-score02-3=

| RD1-seed03=
| RD1-team03= Pablo Llamas Ruiz
| RD1-score03-1=3
| RD1-score03-2=1
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= Luca Nardi
| RD1-score04-1=6
| RD1-score04-2=6
| RD1-score04-3=

| RD1-seed05=
| RD1-team05= Govind Nanda
| RD1-score05-1=7
| RD1-score05-2=6
| RD1-score05-3=
| RD1-seed06=
| RD1-team06= Eric Vanshelboim
| RD1-score06-1=5
| RD1-score06-2=2
| RD1-score06-3=

| RD1-seed07=Q
| RD1-team07= Giovanni Mpetshi Perricard
| RD1-score07-1=3
| RD1-score07-2=61
| RD1-score07-3=
| RD1-seed08=16
| RD1-team08= Péter Makk
| RD1-score08-1=6
| RD1-score08-2=77
| RD1-score08-3=

| RD1-seed09=9
| RD1-team09= Gauthier Onclin
| RD1-score09-1=6
| RD1-score09-2=67
| RD1-score09-3=7
| RD1-seed10=
| RD1-team10= Taha Baadi
| RD1-score10-1=1
| RD1-score10-2=79
| RD1-score10-3=5

| RD1-seed11=Q
| RD1-team11= Natan Rodrigues
| RD1-score11-1=4
| RD1-score11-2=4
| RD1-score11-3=
| RD1-seed12=WC
| RD1-team12= William Grant
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=Q
| RD1-team13= Milan Welte
| RD1-score13-1=6
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=Q
| RD1-team14= Kārlis Ozoliņš
| RD1-score14-1=4
| RD1-score14-2=1
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Olimjon Nabiev
| RD1-score15-1=3
| RD1-score15-2=1
| RD1-score15-3=
| RD1-seed16=6
| RD1-team16= Toby Kodat
| RD1-score16-1=6
| RD1-score16-2=6
| RD1-score16-3=

| RD2-seed01=4
| RD2-team01= J Forejtek
| RD2-score01-1=6
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=
| RD2-team02= L Nardi
| RD2-score02-1=3
| RD2-score02-2=2
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= G Nanda
| RD2-score03-1=62
| RD2-score03-2=4
| RD2-score03-3=
| RD2-seed04=16
| RD2-team04= P Makk
| RD2-score04-1=77
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=9
| RD2-team05= G Onclin
| RD2-score05-1=6
| RD2-score05-2=6
| RD2-score05-3=
| RD2-seed06=WC
| RD2-team06= W Grant
| RD2-score06-1=2
| RD2-score06-2=3
| RD2-score06-3=

| RD2-seed07=Q
| RD2-team07= M Welte
| RD2-score07-1=6
| RD2-score07-2=77
| RD2-score07-3=
| RD2-seed08=6
| RD2-team08= T Kodat
| RD2-score08-1=2
| RD2-score08-2=64
| RD2-score08-3=

| RD3-seed01=4
| RD3-team01= J Forejtek
| RD3-score01-1=6
| RD3-score01-2=3
| RD3-score01-3=6
| RD3-seed02=16
| RD3-team02= P Makk
| RD3-score02-1=1
| RD3-score02-2=6
| RD3-score02-3=2

| RD3-seed03=9
| RD3-team03= G Onclin
| RD3-score03-1=3
| RD3-score03-2=4
| RD3-score03-3=
| RD3-seed04=Q
| RD3-team04= M Welte
| RD3-score04-1=6
| RD3-score04-2=6
| RD3-score04-3=

| RD4-seed01=4
| RD4-team01= J Forejtek
| RD4-score01-1=3
| RD4-score01-2=7
| RD4-score01-3=7
| RD4-seed02=Q
| RD4-team02= M Welte
| RD4-score02-1=6
| RD4-score02-2=5
| RD4-score02-3=5
}}

Nửa dưới
Nhánh 3
Emilio Nava
| RD1-score01-1=6
| RD1-score01-2=3
| RD1-score01-3=78
| RD1-seed02=
| RD1-team02= Nicolás Álvarez Varona
| RD1-score02-1=2
| RD1-score02-2=6
| RD1-score02-3=66

| RD1-seed03=
| RD1-team03= Matteo Arnaldi
| RD1-score03-1=6
| RD1-score03-2=6
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= Eliot Spizzirri
| RD1-score04-1=3
| RD1-score04-2=1
| RD1-score04-3=

| RD1-seed05=
| RD1-team05= Juan Bautista Torres
| RD1-score05-1=6
| RD1-score05-2=6
| RD1-score05-3=
| RD1-seed06=
| RD1-team06= Kevin Chahoud
| RD1-score06-1=2
| RD1-score06-2=2
| RD1-score06-3=

| RD1-seed07=Q
| RD1-team07= Aidan Mayo
| RD1-score07-1=6
| RD1-score07-2=7
| RD1-score07-3=
| RD1-seed08=12
| RD1-team08= Shunsuke Mitsui
| RD1-score08-1=4
| RD1-score08-2=5
| RD1-score08-3=

| RD1-seed09=15
| RD1-team09= Jiří Lehečka
| RD1-score09-1=7
| RD1-score09-2=6
| RD1-score09-3=
| RD1-seed10=WC
| RD1-team10= Ronald Hohmann
| RD1-score10-1=5
| RD1-score10-2=1
| RD1-score10-3=

| RD1-seed11=
| RD1-team11= Hamad Međedović
| RD1-score11-1=4
| RD1-score11-2=0
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= Alexander Zgirovsky
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= Samuel Vincent Ruggeri
| RD1-score13-1=2
| RD1-score13-2=3
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= Rinky Hijikata
| RD1-score14-1=6
| RD1-score14-2=6
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Stijn Pel
| RD1-score15-1=1
| RD1-score15-2=64
| RD1-score15-3=
| RD1-seed16=3
| RD1-team16= Martin Damm
| RD1-score16-1=6
| RD1-score16-2=77
| RD1-score16-3=

| RD2-seed01=8/WC
| RD2-team01= E Nava
| RD2-score01-1=64
| RD2-score01-2=7
| RD2-score01-3=7
| RD2-seed02=
| RD2-team02= M Arnaldi
| RD2-score02-1=77
| RD2-score02-2=5
| RD2-score02-3=5

| RD2-seed03=
| RD2-team03= JB Torres
| RD2-score03-1=4
| RD2-score03-2=6
| RD2-score03-3=2
| RD2-seed04=Q
| RD2-team04= A Mayo
| RD2-score04-1=6
| RD2-score04-2=2
| RD2-score04-3=6

| RD2-seed05=15
| RD2-team05= J Lehečka
| RD2-score05-1=6
| RD2-score05-2=6
| RD2-score05-3=
| RD2-seed06=
| RD2-team06= A Zgirovsky
| RD2-score06-1=3
| RD2-score06-2=2
| RD2-score06-3=

| RD2-seed07=
| RD2-team07= R Hijikata
| RD2-score07-1=6
| RD2-score07-2=6
| RD2-score07-3=
| RD2-seed08=3
| RD2-team08= M Damm
| RD2-score08-1=4
| RD2-score08-2=4
| RD2-score08-3=

| RD3-seed01=8/WC
| RD3-team01= E Nava
| RD3-score01-1=77
| RD3-score01-2=6
| RD3-score01-3=
| RD3-seed02=Q
| RD3-team02= A Mayo
| RD3-score02-1=63
| RD3-score02-2=2
| RD3-score02-3=

| RD3-seed03=15
| RD3-team03= J Lehečka
| RD3-score03-1=6
| RD3-score03-2=6
| RD3-score03-3=
| RD3-seed04=
| RD3-team04= R Hijikata
| RD3-score04-1=4
| RD3-score04-2=3
| RD3-score04-3=

| RD4-seed01=8/WC
| RD4-team01= E Nava
| RD4-score01-1=6
| RD4-score01-2=6
| RD4-score01-3=
| RD4-seed02=15
| RD4-team02= J Lehečka
| RD4-score02-1=3
| RD4-score02-2=1
| RD4-score02-3=
}}

Nhánh 4
Thiago Agustín Tirante
| RD1-score01-1=4
| RD1-score01-2=6
| RD1-score01-3=6
| RD1-seed02=WC
| RD1-team02= Ronan Jachuck
| RD1-score02-1=6
| RD1-score02-2=2
| RD1-score02-3=3

| RD1-seed03=
| RD1-team03= Cannon Kingsley
| RD1-score03-1=65
| RD1-score03-2=77
| RD1-score03-3=6
| RD1-seed04=
| RD1-team04= Wojciech Marek
| RD1-score04-1=77
| RD1-score04-2=64
| RD1-score04-3=4

| RD1-seed05=WC
| RD1-team05= Dali Blanch
| RD1-score05-1=6
| RD1-score05-2=5
| RD1-score05-3=3
| RD1-seed06=
| RD1-team06= Arthur Fery
| RD1-score06-1=4
| RD1-score06-2=7
| RD1-score06-3=6

| RD1-seed07=
| RD1-team07= Nini Gabriel Dica
| RD1-score07-1=3
| RD1-score07-2=2
| RD1-score07-3=
| RD1-seed08=10
| RD1-team08= Liam Draxl
| RD1-score08-1=6
| RD1-score08-2=6
| RD1-score08-3=

| RD1-seed09=13
| RD1-team09= Keisuke Saitoh
| RD1-score09-1=1
| RD1-score09-2=1
| RD1-score09-3=
| RD1-seed10=
| RD1-team10= Dalibor Svrčina
| RD1-score10-1=6
| RD1-score10-2=6
| RD1-score10-3=

| RD1-seed11=WC
| RD1-team11= Alexander Bernard
| RD1-score11-1=1
| RD1-score11-2=4
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= Arthur Cazaux
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= Dominic Stephan Stricker
| RD1-score13-1=77
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= Matheus Pucinelli de Almeida
| RD1-score14-1=64
| RD1-score14-2=4
| RD1-score14-3=

| RD1-seed15=Q
| RD1-team15= Cash Hanzlik
| RD1-score15-1=2
| RD1-score15-2=7
| RD1-score15-3=65
| RD1-seed16=2
| RD1-team16= Holger Vitus Nødskov Rune
| RD1-score16-1=6
| RD1-score16-2=5
| RD1-score16-3=77

| RD2-seed01=5
| RD2-team01= TA Tirante
| RD2-score01-1=66
| RD2-score01-2=0r
| RD2-score01-3=
| RD2-seed02=
| RD2-team02= C Kingsley
| RD2-score02-1=78
| RD2-score02-2=2
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= A Fery
| RD2-score03-1=65
| RD2-score03-2=1
| RD2-score03-3=
| RD2-seed04=10
| RD2-team04= L Draxl
| RD2-score04-1=77
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=
| RD2-team05= D Svrčina
| RD2-score05-1=6
| RD2-score05-2=77
| RD2-score05-3=
| RD2-seed06=
| RD2-team06= A Cazaux
| RD2-score06-1=1
| RD2-score06-2=64
| RD2-score06-3=

| RD2-seed07=
| RD2-team07= DS Stricker
| RD2-score07-1=6
| RD2-score07-2=7
| RD2-score07-3=
| RD2-seed08=2
| RD2-team08= HVN Rune
| RD2-score08-1=4
| RD2-score08-2=5
| RD2-score08-3=

| RD3-seed01=
| RD3-team01= C Kingsley
| RD3-score01-1=79
| RD3-score01-2=78
| RD3-score01-3=
| RD3-seed02=10
| RD3-team02= L Draxl
| RD3-score02-1=67
| RD3-score02-2=66
| RD3-score02-3=

| RD3-seed03=
| RD3-team03= D Svrčina
| RD3-score03-1=6
| RD3-score03-2=3
| RD3-score03-3=3
| RD3-seed04=
| RD3-team04= DS Stricker
| RD3-score04-1=3
| RD3-score04-2=6
| RD3-score04-3=6

| RD4-seed01=
| RD4-team01= C Kingsley
| RD4-score01-1=77
| RD4-score01-2=6
| RD4-score01-3=
| RD4-seed02=
| RD4-team02= DS Stricker
| RD4-score02-1=63
| RD4-score02-2=4
| RD4-score02-3=
}}

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