Giải quần vợt Mỹ Mở rộng 2019 - Đơn nữ trẻ

María Camila Osorio Serrano
| runner = Alexandra Yepifanova
| score = 6–1, 6–0
| type = giaiquanvotmymorong
| before_name = Giải quần vợt Mỹ Mở rộng - Đơn nữ trẻ
| after_name = Giải quần vợt Mỹ Mở rộng - Đơn nữ trẻ
}}

Wang Xiyu là đương kim vô địch, nhưng không còn đủ điều kiện tham dự giải trẻ.
María Camila Osorio Serrano giành chức vô địch, sau khi đánh bại Alexandra Yepifanova 6−1, 6−0 tại chung kết.

Hạt giống
Emma Navarro (Vòng 2)
Diane Parry (Vòng 1)
Alexa Noel
María Camila Osorio Serrano
Zheng Qinwen
Natsumi Kawaguchi (Vòng 1)
Kamilla Bartone
Hurricane Tyra Black (Vòng 1, bỏ cuộc)

Sada Nahimana (Vòng 1)
Alina Charaeva (Vòng 1)
Mananchaya Sawangkaew (Vòng 1)
Park So-hyun
Abigail Forbes
Anastasia Tikhonova (Vòng 1)
Polina Kudermetova
Elsa Jacquemot
}}

Vòng loại

Bốc thăm vòng đấu chính

Vòng chung kết
Oksana Selekhmeteva
| RD1-score1-1=1
| RD1-score1-2=6
| RD1-score1-3=6
| RD1-seed2=WC
| RD1-team2= Katrina Scott
| RD1-score2-1=6
| RD1-score2-2=3
| RD1-score2-3=3

| RD1-seed3=4
| RD1-team3= María Camila Osorio Serrano
| RD1-score3-1=6
| RD1-score3-2=6
| RD1-score3-3=
| RD1-seed4=7
| RD1-team4= Kamilla Bartone
| RD1-score4-1=3
| RD1-score4-2=4
| RD1-score4-3=

| RD1-seed5=5
| RD1-team5= Zheng Qinwen
| RD1-score5-1=6
| RD1-score5-2=6
| RD1-score5-3=
| RD1-seed6=
| RD1-team6= Priska Madelyn Nugroho
| RD1-score6-1=3
| RD1-score6-2=3
| RD1-score6-3=

| RD1-seed7=Q
| RD1-team7= Alexandra Yepifanova
| RD1-score7-1=4
| RD1-score7-2=6
| RD1-score7-3=6
| RD1-seed8=WC
| RD1-team8= Reese Brantmeier
| RD1-score8-1=6
| RD1-score8-2=3
| RD1-score8-3=1

| RD2-seed1=
| RD2-team1= Oksana Selekhmeteva
| RD2-score1-1=3
| RD2-score1-2=77
| RD2-score1-3=4
| RD2-seed2=4
| RD2-team2= María Camila Osorio Serrano
| RD2-score2-1=6
| RD2-score2-2=63
| RD2-score2-3=6

| RD2-seed3=5
| RD2-team3= Zheng Qinwen
| RD2-score3-1=6
| RD2-score3-2=4
| RD2-score3-3=5
| RD2-seed4=Q
| RD2-team4= Alexandra Yepifanova
| RD2-score4-1=3
| RD2-score4-2=6
| RD2-score4-3=7

| RD3-seed1=4
| RD3-team1= María Camila Osorio Serrano
| RD3-score1-1=6
| RD3-score1-2=6
| RD3-score1-3=
| RD3-seed2=Q
| RD3-team2= Alexandra Yepifanova
| RD3-score2-1=1
| RD3-score2-2=0
| RD3-score2-3=
}}

Nửa trên

Nhánh 1
Emma Navarro
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3=
| RD1-seed02=
| RD1-team02= Hong Yi Cody Wong
| RD1-score02-1=0
| RD1-score02-2=3
| RD1-score02-3=

| RD1-seed03=
| RD1-team03= Oksana Selekhmeteva
| RD1-score03-1=6
| RD1-score03-2=3
| RD1-score03-3=6
| RD1-seed04=
| RD1-team04= Caijsa Hennemann
| RD1-score04-1=1
| RD1-score04-2=6
| RD1-score04-3=3

| RD1-seed05=WC
| RD1-team05= Gabriella Price
| RD1-score05-1=7
| RD1-score05-2=4
| RD1-score05-3=6
| RD1-seed06=
| RD1-team06= Helene Pellicano
| RD1-score06-1=5
| RD1-score06-2=6
| RD1-score06-3=2

| RD1-seed07=
| RD1-team07= Thasaporn Naklo
| RD1-score07-1=1
| RD1-score07-2=3
| RD1-score07-3=
| RD1-seed08=16
| RD1-team08= Elsa Jacquemot
| RD1-score08-1=6
| RD1-score08-2=6
| RD1-score08-3=

| RD1-seed09=10
| RD1-team09= Alina Charaeva
| RD1-score09-1=5
| RD1-score09-2=3
| RD1-score09-3=
| RD1-seed10=WC
| RD1-team10= Katrina Scott
| RD1-score10-1=7
| RD1-score10-2=6
| RD1-score10-3=

| RD1-seed11=WC
| RD1-team11= Natasha Subhash
| RD1-score11-1=3
| RD1-score11-2=2
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= Jéssica Bouzas Maneiro
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= Robin Montgomery
| RD1-score13-1=6
| RD1-score13-2=7
| RD1-score13-3=
| RD1-seed14=Q
| RD1-team14= Carol Young Suh Lee
| RD1-score14-1=2
| RD1-score14-2=5
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Joanna Garland
| RD1-score15-1=6
| RD1-score15-2=1
| RD1-score15-3=6
| RD1-seed16=6
| RD1-team16= Natsumi Kawaguchi
| RD1-score16-1=4
| RD1-score16-2=6
| RD1-score16-3=3

| RD2-seed01=1
| RD2-team01= E Navarro
| RD2-score01-1=4
| RD2-score01-2=6
| RD2-score01-3=4
| RD2-seed02=
| RD2-team02= O Selekhmeteva
| RD2-score02-1=6
| RD2-score02-2=4
| RD2-score02-3=6

| RD2-seed03=WC
| RD2-team03= G Price
| RD2-score03-1=60
| RD2-score03-2=1
| RD2-score03-3=
| RD2-seed04=16
| RD2-team04= E Jacquemot
| RD2-score04-1=77
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=WC
| RD2-team05= K Scott
| RD2-score05-1=6
| RD2-score05-2=1
| RD2-score05-3=6
| RD2-seed06=
| RD2-team06= J Bouzas Maneiro
| RD2-score06-1=4
| RD2-score06-2=6
| RD2-score06-3=3

| RD2-seed07=
| RD2-team07= R Montgomery
| RD2-score07-1=1
| RD2-score07-2=6
| RD2-score07-3=6
| RD2-seed08=
| RD2-team08= J Garland
| RD2-score08-1=6
| RD2-score08-2=2
| RD2-score08-3=4

| RD3-seed01=
| RD3-team01= O Selekhmeteva
| RD3-score01-1=6
| RD3-score01-2=6
| RD3-score01-3=
| RD3-seed02=16
| RD3-team02= E Jacquemot
| RD3-score02-1=4
| RD3-score02-2=4
| RD3-score02-3=

| RD3-seed03=WC
| RD3-team03= K Scott
| RD3-score03-1=7
| RD3-score03-2=6
| RD3-score03-3=
| RD3-seed04=
| RD3-team04= R Montgomery
| RD3-score04-1=5
| RD3-score04-2=3
| RD3-score04-3=

| RD4-seed01=
| RD4-team01= O Selekhmeteva
| RD4-score01-1=1
| RD4-score01-2=6
| RD4-score01-3=6
| RD4-seed02=WC
| RD4-team02= K Scott
| RD4-score02-1=6
| RD4-score02-2=3
| RD4-score02-3=3
}}

Nhánh 2
María Camila Osorio Serrano
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3=
| RD1-seed02=
| RD1-team02= Diana Shnaider
| RD1-score02-1=4
| RD1-score02-2=2
| RD1-score02-3=

| RD1-seed03=
| RD1-team03= Katie Volynets
| RD1-score03-1=6
| RD1-score03-2=6
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= Carole Monnet
| RD1-score04-1=1
| RD1-score04-2=3
| RD1-score04-3=

| RD1-seed05=Q
| RD1-team05= Lauren Anzalotta Kynoch
| RD1-score05-1=4
| RD1-score05-2=3
| RD1-score05-3=
| RD1-seed06=
| RD1-team06= Bai Zhuoxuan
| RD1-score06-1=6
| RD1-score06-2=6
| RD1-score06-3=

| RD1-seed07=
| RD1-team07= Ane Mintegi del Olmo
| RD1-score07-1=2
| RD1-score07-2=3
| RD1-score07-3=
| RD1-seed08=13
| RD1-team08= Abigail Forbes
| RD1-score08-1=6
| RD1-score08-2=6
| RD1-score08-3=

| RD1-seed09=12
| RD1-team09= Park So-hyun
| RD1-score09-1=6
| RD1-score09-2=3
| RD1-score09-3=6
| RD1-seed10=WC
| RD1-team10= Elizabeth Coleman
| RD1-score10-1=3
| RD1-score10-2=6
| RD1-score10-3=3

| RD1-seed11=WC
| RD1-team11= Charlotte Chavatipon
| RD1-score11-1=2
| RD1-score11-2=3
| RD1-score11-3=
| RD1-seed12=Q
| RD1-team12= Ana Geller
| RD1-score12-1=6
| RD1-score12-2=6
| RD1-score12-3=

| RD1-seed13=Q
| RD1-team13= Elvina Kalieva
| RD1-score13-1=6
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= Maria Timofeeva
| RD1-score14-1=2
| RD1-score14-2=2
| RD1-score14-3=

| RD1-seed15=Q
| RD1-team15= Michaela Kadlečková
| RD1-score15-1=4
| RD1-score15-2=2
| RD1-score15-3=
| RD1-seed16=7
| RD1-team16= Kamilla Bartone
| RD1-score16-1=6
| RD1-score16-2=6
| RD1-score16-3=

| RD2-seed01=4
| RD2-team01= MC Osorio Serrano
| RD2-score01-1=6
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=
| RD2-team02= K Volynets
| RD2-score02-1=4
| RD2-score02-2=4
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= Z Bai
| RD2-score03-1=3
| RD2-score03-2=4
| RD2-score03-3=
| RD2-seed04=13
| RD2-team04= A Forbes
| RD2-score04-1=6
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=12
| RD2-team05= S-h Park
| RD2-score05-1=6
| RD2-score05-2=6
| RD2-score05-3=
| RD2-seed06=Q
| RD2-team06= A Geller
| RD2-score06-1=4
| RD2-score06-2=4
| RD2-score06-3=

| RD2-seed07=Q
| RD2-team07= E Kalieva
| RD2-score07-1=0
| RD2-score07-2=1
| RD2-score07-3=
| RD2-seed08=7
| RD2-team08= K Bartone
| RD2-score08-1=6
| RD2-score08-2=6
| RD2-score08-3=

| RD3-seed01=4
| RD3-team01= MC Osorio Serrano
| RD3-score01-1=7
| RD3-score01-2=77
| RD3-score01-3=
| RD3-seed02=13
| RD3-team02= A Forbes
| RD3-score02-1=5
| RD3-score02-2=63
| RD3-score02-3=

| RD3-seed03=12
| RD3-team03= S-h Park
| RD3-score03-1=1
| RD3-score03-2=3
| RD3-score03-3=
| RD3-seed04=7
| RD3-team04= K Bartone
| RD3-score04-1=6
| RD3-score04-2=6
| RD3-score04-3=

| RD4-seed01=4
| RD4-team01= MC Osorio Serrano
| RD4-score01-1=6
| RD4-score01-2=6
| RD4-score01-3=
| RD4-seed02=7
| RD4-team02= K Bartone
| RD4-score02-1=3
| RD4-score02-2=4
| RD4-score02-3=
}}

Nửa dưới
Nhánh 3
Zheng Qinwen
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3=
| RD1-seed02=WC
| RD1-team02= India Houghton
| RD1-score02-1=3
| RD1-score02-2=4
| RD1-score02-3=

| RD1-seed03=WC
| RD1-team03= Maribella Zamarripa
| RD1-score03-1=6
| RD1-score03-2=6
| RD1-score03-3=
| RD1-seed04=
| RD1-team04= Antonia Samudio
| RD1-score04-1=0
| RD1-score04-2=2
| RD1-score04-3=

| RD1-seed05=
| RD1-team05= Melodie Collard
| RD1-score05-1=6
| RD1-score05-2=6
| RD1-score05-3=
| RD1-seed06=
| RD1-team06= Chloe Beck
| RD1-score06-1=1
| RD1-score06-2=1
| RD1-score06-3=

| RD1-seed07=
| RD1-team07= Daria Frayman
| RD1-score07-1=1
| RD1-score07-2=6
| RD1-score07-3=6
| RD1-seed08=11
| RD1-team08= Mananchaya Sawangkaew
| RD1-score08-1=6
| RD1-score08-2=2
| RD1-score08-3=3

| RD1-seed09=14
| RD1-team09= Anastasia Tikhonova
| RD1-score09-1=6
| RD1-score09-2=4
| RD1-score09-3=0
| RD1-seed10=
| RD1-team10= Adrienn Nagy
| RD1-score10-1=1
| RD1-score10-2=6
| RD1-score10-3=6

| RD1-seed11=
| RD1-team11= Priska Madelyn Nugroho
| RD1-score11-1=2
| RD1-score11-2=6
| RD1-score11-3=6
| RD1-seed12=Q
| RD1-team12= Skyler Marie Grace Grishuk
| RD1-score12-1=6
| RD1-score12-2=4
| RD1-score12-3=4

| RD1-seed13=
| RD1-team13= Aubane Droguet
| RD1-score13-1=6
| RD1-score13-2=6
| RD1-score13-3=
| RD1-seed14=
| RD1-team14= Carlota Martínez Cirez
| RD1-score14-1=2
| RD1-score14-2=2
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Darja Semenistaja
| RD1-score15-1=0
| RD1-score15-2=7
| RD1-score15-3=5
| RD1-seed16=3
| RD1-team16= Alexa Noel
| RD1-score16-1=6
| RD1-score16-2=5
| RD1-score16-3=7

| RD2-seed01=5
| RD2-team01= Q Zheng
| RD2-score01-1=6
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=WC
| RD2-team02= M Zamarripa
| RD2-score02-1=0
| RD2-score02-2=2
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= M Collard
| RD2-score03-1=2
| RD2-score03-2=2
| RD2-score03-3=
| RD2-seed04=
| RD2-team04= D Frayman
| RD2-score04-1=6
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=
| RD2-team05= A Nagy
| RD2-score05-1=4
| RD2-score05-2=2
| RD2-score05-3=
| RD2-seed06=
| RD2-team06= PM Nugroho
| RD2-score06-1=6
| RD2-score06-2=6
| RD2-score06-3=

| RD2-seed07=
| RD2-team07= A Droguet
| RD2-score07-1=61
| RD2-score07-2=6
| RD2-score07-3=5
| RD2-seed08=3
| RD2-team08= A Noel
| RD2-score08-1=77
| RD2-score08-2=3
| RD2-score08-3=7

| RD3-seed01=5
| RD3-team01= Q Zheng
| RD3-score01-1=6
| RD3-score01-2=6
| RD3-score01-3=
| RD3-seed02=
| RD3-team02= D Frayman
| RD3-score02-1=4
| RD3-score02-2=0
| RD3-score02-3=

| RD3-seed03=
| RD3-team03= PM Nugroho
| RD3-score03-1=6
| RD3-score03-2=6
| RD3-score03-3=
| RD3-seed04=3
| RD3-team04= A Noel
| RD3-score04-1=2
| RD3-score04-2=1
| RD3-score04-3=

| RD4-seed01=5
| RD4-team01= Q Zheng
| RD4-score01-1=6
| RD4-score01-2=6
| RD4-score01-3=
| RD4-seed02=
| RD4-team02= PM Nugroho
| RD4-score02-1=3
| RD4-score02-2=3
| RD4-score02-3=
}}

Nhánh 4
Hurricane Tyra Black
| RD1-score01-1=6
| RD1-score01-2=2r
| RD1-score01-3=
| RD1-seed02=
| RD1-team02= Mai Napatt Nirundorn
| RD1-score02-1=1
| RD1-score02-2=5
| RD1-score02-3=

| RD1-seed03=
| RD1-team03= Annerly Poulos
| RD1-score03-1=1
| RD1-score03-2=2
| RD1-score03-3=
| RD1-seed04=Q
| RD1-team04= Alexandra Eala
| RD1-score04-1=6
| RD1-score04-2=6
| RD1-score04-3=

| RD1-seed05=
| RD1-team05= Séléna Janicijevic
| RD1-score05-1=3
| RD1-score05-2=2
| RD1-score05-3=
| RD1-seed06=
| RD1-team06= Linda Fruhvirtová
| RD1-score06-1=6
| RD1-score06-2=6
| RD1-score06-3=

| RD1-seed07=Q
| RD1-team07= Alexandra Yepifanova
| RD1-score07-1=6
| RD1-score07-2=6
| RD1-score07-3=
| RD1-seed08=9
| RD1-team08= Sada Nahimana
| RD1-score08-1=2
| RD1-score08-2=4
| RD1-score08-3=

| RD1-seed09=15
| RD1-team09= Polina Kudermetova
| RD1-score09-1=4
| RD1-score09-2=6
| RD1-score09-3=6
| RD1-seed10=LL
| RD1-team10= Romana Čisovská
| RD1-score10-1=6
| RD1-score10-2=3
| RD1-score10-3=3

| RD1-seed11=
| RD1-team11= Savannah Broadus
| RD1-score11-1=6
| RD1-score11-2=6
| RD1-score11-3=
| RD1-seed12=
| RD1-team12= Mell Reasco González
| RD1-score12-1=2
| RD1-score12-2=2
| RD1-score12-3=

| RD1-seed13=
| RD1-team13= Alexandra Vecic
| RD1-score13-1=1
| RD1-score13-2=2
| RD1-score13-3=
| RD1-seed14=WC
| RD1-team14= Reese Brantmeier
| RD1-score14-1=6
| RD1-score14-2=6
| RD1-score14-3=

| RD1-seed15=
| RD1-team15= Marta Custic
| RD1-score15-1=6
| RD1-score15-2=77
| RD1-score15-3=
| RD1-seed16=2
| RD1-team16= Diane Parry
| RD1-score16-1=4
| RD1-score16-2=64
| RD1-score16-3=

| RD2-seed01=
| RD2-team01= MN Nirundorn
| RD2-score01-1=7
| RD2-score01-2=6
| RD2-score01-3=
| RD2-seed02=Q
| RD2-team02= A Eala
| RD2-score02-1=5
| RD2-score02-2=3
| RD2-score02-3=

| RD2-seed03=
| RD2-team03= L Fruhvirtová
| RD2-score03-1=5
| RD2-score03-2=4
| RD2-score03-3=
| RD2-seed04=Q
| RD2-team04= A Yepifanova
| RD2-score04-1=7
| RD2-score04-2=6
| RD2-score04-3=

| RD2-seed05=15
| RD2-team05= P Kudermetova
| RD2-score05-1=77
| RD2-score05-2=63
| RD2-score05-3=7
| RD2-seed06=
| RD2-team06= S Broadus
| RD2-score06-1=65
| RD2-score06-2=77
| RD2-score06-3=5

| RD2-seed07=WC
| RD2-team07= R Brantmeier
| RD2-score07-1=77
| RD2-score07-2=65
| RD2-score07-3=6
| RD2-seed08=
| RD2-team08= M Custic
| RD2-score08-1=64
| RD2-score08-2=77
| RD2-score08-3=4

| RD3-seed01=
| RD3-team01= MN Nirundorn
| RD3-score01-1=6
| RD3-score01-2=5
| RD3-score01-3=63
| RD3-seed02=Q
| RD3-team02= A Yepifanova
| RD3-score02-1=3
| RD3-score02-2=7
| RD3-score02-3=77

| RD3-seed03=15
| RD3-team03= P Kudermetova
| RD3-score03-1=1
| RD3-score03-2=3
| RD3-score03-3=
| RD3-seed04=WC
| RD3-team04= R Brantmeier
| RD3-score04-1=6
| RD3-score04-2=6
| RD3-score04-3=

| RD4-seed01=Q
| RD4-team01= A Yepifanova
| RD4-score01-1=4
| RD4-score01-2=6
| RD4-score01-3=6
| RD4-seed02=WC
| RD4-team02= R Brantmeier
| RD4-score02-1=6
| RD4-score02-2=3
| RD4-score02-3=1
}}

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