Boys' singles
2018 US Open
Champion	Thiago Seyboth Wild
Runner-up	Lorenzo Musetti
Score	6–1, 2–6, 6–2

Wu Yibing was the defending champion, but was no longer eligible to participate in junior tournaments.

Thiago Seyboth Wild won the title, defeating Lorenzo Musetti in the final, 6–1, 2–6, 6–2.^[1]

Seeds

Main draw

Finals

	Quarterfinals							Semifinals							Final
	1	Tseng Chun-hsin	77	6
	Q	Giulio Zeppieri	60	2
								1	Tseng Chun-hsin	2	4
								6	Thiago Seyboth Wild	6	6
	SE	Taisei Ichikawa	63	4
	6	Thiago Seyboth Wild	77	6
															6	Thiago Seyboth Wild	6	2	6
																Lorenzo Musetti	1	6	2
	WC	Jenson Brooksby	6	7
	14	Brandon Nakashima	4	5
								WC	Jenson Brooksby	3	3
									Lorenzo Musetti	6	6
		Lorenzo Musetti	6	6
		Daniel Michalski	4	0

Top half

Section 1

	First round							Second round							Third round							Quarterfinals
	1	Tseng Chun-hsin	6	6
	WC	Toby Alex Kodat	2	0				1	C-h Tseng	5	6	6
		Nicolás Álvarez Varona	4	4					P Henning	7	1	0
		Philip Henning	6	6											1	C-h Tseng	6	6
		Ondřej Štyler	4	4											Q	W Marek	2	3
	SE	Emilio Nava	6	6				SE	E Nava	3	5
	Q	Wojciech Marek	6	77				Q	W Marek	6	7
	13	Filip Cristian Jianu	0	65																		1	C-h Tseng	77	6
	10	Facundo Díaz Acosta	64	6	5																	Q	G Zeppieri	60	2
	Q	Mateus Alves	77	4	7			Q	M Alves	4	5
		Nick Hardt	6	710					N Hardt	6	7
	WC	Govind Nanda	4	68												N Hardt	4	1
	Q	Giulio Zeppieri	6	6											Q	G Zeppieri	6	6
		Harold Mayot	2	0				Q	G Zeppieri	6	6
	WC	Martin Damm	2	4				5	T Skatov	0	1
	5	Timofei Skatov	6	6

Section 2

	First round							Second round							Third round							Quarterfinals
	4	Nicolás Mejía	77	6
	Q	Eliot Spizzirri	62	2				4	N Mejía	6	6
		Clément Tabur	6	5	2			WC	K Mayo	3	3
	WC	Keenan Mayo	4	7	6										4	N Mejía	6	5	4
		Andrew Fenty	6	2	3										SE	T Ichikawa	3	7	6
	SE	Taisei Ichikawa	4	6	6			SE	T Ichikawa	62	77	6
		Thiago Agustín Tirante	7	1	6				TA Tirante	77	60	2
	16	Yankı Erel	5	6	3																	SE	T Ichikawa	63	4
	11	Tristan Boyer	1	5																		6	T Seyboth Wild	77	6
		Jesper de Jong	6	7					J de Jong	4	1
		Aidan McHugh	77	6					A McHugh	6	6
	Q	Cristian Crețu	62	3												A McHugh	4	1
		Jiří Lehečka	78	7											6	T Seyboth Wild	6	6
		Rinky Hijikata	66	5					J Lehečka	4	2
	WC	Zane Khan	79	1	3			6	T Seyboth Wild	6	6
	6	Thiago Seyboth Wild	67	6	6

Bottom half

Section 3

	First round							Second round							Third round							Quarterfinals
	8	Naoki Tajima	1	3
		Jonáš Forejtek	6	6					J Forejtek	1	2
	Q	Valentin Royer	6	2	2			WC	J Brooksby	6	6
	WC	Jenson Brooksby	4	6	6										WC	J Brooksby	7	6
	Q	Henry von der Schulenburg	6	4											Q	H von der Schulenburg	5	2
		Deney Wassermann	3	3r				Q	H von der Schulenburg	6	6
		Trey Hilderbrand	77	2	6				T Hilderbrand	4	4
	12	Mu Tao	65	6	2																	WC	J Brooksby	6	7
	14	Brandon Nakashima	77	6																		14	B Nakashima	4	5
	LL	Henri Squire	64	4				14	B Nakashima	6	6
		Anton Matusevich	7	5	5				O Virtanen	3	4
		Otto Virtanen	5	7	7										14	B Nakashima	6	6
		Juan Manuel Cerúndolo	6	6											3	H Gaston	1	2
		Damien Wenger	2	3					JM Cerúndolo	2	1
	WC	Neel Rajesh	1	3				3	H Gaston	6	6
	3	Hugo Gaston	6	6

Section 4

	First round							Second round							Third round							Quarterfinals
	7	Adrian Andreev	3	2r
		Arthur Cazaux	6	4					A Cazaux	0	6	3
		Lorenzo Musetti	6	6					L Musetti	6	3	6
	WC	Stefan Dostanic	4	0												L Musetti	3	6	6
		Arnaud Bovy	6	7												C Kingsley	6	3	0
	Q	Axel Nefve	4	5					A Bovy	1	78	4
		Cannon Kingsley	6	6					C Kingsley	6	66	6
	9	Gilbert Soares Klier Júnior	2	3																			L Musetti	6	6
	15	Carlos López Montagud	2	4																			D Michalski	4	0
		Antoine Cornut Chauvinc	6	6					A Cornut Chauvinc	6	7
		Dalibor Svrčina	6	3	6				D Svrčina	4	5
		Tyler Zink	3	6	2											A Cornut Chauvinc	6	2	4
		Daniel Michalski	1	6	77											D Michalski	3	6	6
		Drew Baird	6	2	65				D Michalski	6	6
		Dostanbek Tashbulatov	3	5				2	S Báez	4	4
	2	Sebastián Báez	6	7

Qualifying

Draw

First qualifier

	First round							Qualifying competition
	1	Valentin Royer	77	6
		Daniil Glinka	65	2
								1	Valentin Royer	6	6
								WC	Alexander Bernard	4	2
	WC	Alexander Bernard	1	6	6
	10	Matteo Arnaldi	6	3	4

Second qualifier

	First round							Qualifying competition
	2	Mateus Alves	3	77	6
		Filippo Moroni	6	63	4
								2	Mateus Alves	6	6
								14	Henri Squire	3	4
	WC	Eric Hahn	5	2
	14	Henri Squire	7	6

Third qualifier

	First round							Qualifying competition
	3	Wojciech Marek	3	7	6
		Vikash Singh	6	5	3
								3	Wojciech Marek	6	6
								WC	Alexander Lee	3	4
	WC	Alexander Lee	6	7
	13	Davide Tortora	1	5

Fourth qualifier

	First round							Qualifying competition
	4	Alejo Lorenzo Lingua Lavallén	6	7
		Ronan Jachuck	4	5
								4	Alejo Lorenzo Lingua Lavallén	0	4
								9	Henry von der Schulenburg	6	6
		Harry Wendelken	3	6	3
	9	Henry von der Schulenburg	6	2	6

Fifth qualifier

	First round							Qualifying competition
	5	Giulio Zeppieri	6	6
	WC	Niroop Vallabhaneni	1	1
								5	Giulio Zeppieri	6	6
									Filip Kolasiński	1	0
		Filip Kolasiński	6	62	7
	12	Justin Schlageter	4	77	5

Sixth qualifier

	First round							Qualifying competition
	6	Admir Kalender	65	5
		Igor Gimenez	77	7
									Igor Gimenez	3	6	3
								15	Eliot Spizzirri	6	3	6
	WC	Hikaru Shiraishi	62	4
	15	Eliot Spizzirri	77	6

Seventh qualifier

	First round							Qualifying competition
	7	Sergey Fomin	69	64
		Erik Grevelius	711	77
									Erik Grevelius	3	2
								WC	Axel Nefve	6	6
	WC	Axel Nefve	6	6
	16	Siddhant Banthia	3	3

Eighth qualifier

	First round							Qualifying competition
	8	Jacob Fearnley	1	6	6
		Francesco Passaro	6	3	2
								8	Jacob Fearnley	4	5
								11	Cezar Crețu	6	7
		Arthur Craig Pantino	4	3
	11	Cezar Crețu	6	6

References

External links

• Draw