Boys' singles
1998 US Open
Final
Champion	David Nalbandian
Runner-up	Roger Federer
Score	6–3, 7–5
Events
Singles men women boys girls Doubles men women mixed boys girls WC Singles men women quad WC Doubles men women quad Legends men women mixed
← 1997 · US Open · 1999 →

Arnaud Di Pasquale was the defending champion, but did not compete this year.

David Nalbandian won the title by defeating Roger Federer 6–3, 7–5 in the final.

	Quarterfinals							Semifinals							Final
	16	Andy Ram	6	5	3
	10	David Nalbandian	4	7	6
								10	David Nalbandian	6	6
								14	Lovro Zovko	2	2
	14	Lovro Zovko	6	3	77
		Zack Fleishman	0	6	61
															10	David Nalbandian	6	7
															4	Roger Federer	3	5
		Jérôme Haehnel	5	6	1
	4	Roger Federer	7	3	6
								4	Roger Federer	6	4	6
									Kristian Pless	3	6	3
		Kristian Pless	6	6
	2	Fernando González	4	3

	First round							Second round							Third round							Quarterfinals
	1	J Jeanpierre	6	6
		M Boeker	4	3				1	J Jeanpierre	6	6	6
		Jakub Hašek	6	3	6				J Hašek	7	4	2
		Jorge Haro	3	6	3										1	J Jeanpierre	3	2
		A Kedryuk	2	6	3										16	A Ram	6	6
		J Melzer	6	3	6				J Melzer	6	7	4
		Sanzaruz Zaman	2	1				16	A Ram	7	6	6
	16	A Ram	6	6																		16	A Ram	6	5	3
	10	D Nalbandian	6	6																		10	D Nalbandian	4	7	6
		B Veress	0	2				10	D Nalbandian	6	6
		L Magdinčev	6	2	3				R Steckley	0	1
		R Steckley	3	6	6										10	D Nalbandian	6	6
		M Youzhny	6	6												M Youzhny	3	2
		Sebastien Aickele	0	2					M Youzhny	6	5	7
		Johan Kareld	6	6					J Kareld	2	7	5
	7	F Saretta	4	1

	First round							Second round							Third round							Quarterfinals
	3	A Vinciguerra	6	4
		Bob Borella	7	6					B Borella	2	4
		Manoj Mahadevan	4	4					J Nieminen	6	6
		J Nieminen	6	6												J Nieminen	7	1	4
		Raimonds Sproga	6	4	4										14	L Zovko	6	6	6
		Cyril Martin	3	6	6				C Martin	6	3
		S Lipsky	4	1				14	L Zovko	7	6
	14	L Zovko	6	6																		14	L Zovko	6	3	7
	11	J de Armas	6	7	3																		Z Fleishman	0	6	6
		Z Fleishman	7	5	6				Z Fleishman	6	6
		Christian-Michael Straka	6	7					CM Straka	3	3
		L Joseph	3	5												Z Fleishman	7	6
		Mark Kovacs	7	6	3										6	W-j Cheng	5	1
		Philipp Hammer	6	7	6				P Hammer	7	3	2
		Simon Dickson	6	4	2			6	W-j Cheng	5	6	6
	6	Cheng Wei-jen	3	6	6

	First round							Second round							Third round							Quarterfinals
	5	G Coria	4	6
		KJ Hippensteel	6	7					KJ Hippensteel	4	6	6
		Vijay Kannan	6	6					V Kannan	6	3	2
		A Bogomolov Jr.	3	2												KJ Hippensteel	4	4
		A Kračman	3	6	3											J Haehnel	6	6
		M Hilton	6	2	6				M Hilton	4	4
		J Haehnel	6	6					J Haehnel	6	6
	12	Ladislav Chramosta	3	4																			J Haehnel	5	6	1
	13	O Rochus	3	6	6																	4	R Federer	7	3	6
		J Adaktusson	6	2	3			13	O Rochus	6	6
		L Harper-Griffith	1	0					P King	2	3
		P King	6	6											13	O Rochus	2	5
		Stephen Moros	2	2											4	R Federer	6	7
		Philip Langer	6	6					P Langer	3	2
		Boris Bachert	2	2				4	R Federer	6	6
	4	R Federer	6	6

	First round							Second round							Third round							Quarterfinals
	8	A Qureshi	6	2
		K Pless	7	6					K Pless	6	6
		Robert Kowalczyk	7	6					R Kowalczyk	2	3
		M Fish	6	3												K Pless	6	6
		L Pampoulov	2	7	6										9	T Dent	4	2
		JJ Rojer	6	6	3				L Pampoulov	4	1
		Jiří Vrbka	4	3				9	T Dent	6	6
	9	T Dent	6	6																			K Pless	6	6
	15	V Sanon	6	6																		2	F González	4	3
		Ryota Taguchi	4	4				15	V Sanon	7	6
		D Martin	6	6					D Martin	5	0
		K Beck	2	4											15	V Sanon	6	4
		Alexander Hartman	0	4											2	F González	7	6
		L Uebel	6	6					L Uebel	2	1
		A Roddick	6	4	2			2	F González	6	6
	2	F González	3	6	6

• ITF tournament profile
• Unofficial results archive (since Quarterfinals)