1903 U.S. National Championships – Men's singles

Men's singles
1903 U.S. National Championships
Champion	Laurence Doherty
Runner-up	William Larned
Score	6–0, 6–3, 10–8

Main article: 1903 U.S. National Championships

Laurence Doherty defeated the two-time defending champion William Larned 6–0, 6–3, 10–8 to win the men's singles tennis title at the 1903 U.S. National Championships. Doherty had defeated William Clothier in the All Comers' Final, which was delayed by a day due to rain. The event was held at the Newport Casino in Newport, R.I., United States. The entry list consisted of 97 players, which was slightly smaller than that of the previous year.

Challenge round

	Challenge Round
	William Larned		0	3	8
	Laurence Doherty		6	6	10

Draw

All Comers' finals

	Quarterfinals									Semifinals									Finals
	R.C. Seaver		3	2	1
	Richard Carleton		6	6	6
										Richard Carleton		2	0	0
										Laurence Doherty		6	6	6
	Reginald Doherty
	Laurence Doherty		w/o
																			Laurence Doherty		6	6	6
																			William Clothier		3	2	3
	Edward Larned		6	4	6	6
	Bob Huntington		0	6	0	3
										Edward Larned		3	1	2
										William Clothier		6	6	6
	Harry Allen		3	1	2
	William Clothier		6	6	6

Earlier rounds

Section 1

	First round									Second round									Third round									Fourth round
										Waidner		4	12	2	6	6
										Jones		6	10	6	4	1
																			Waidner		d.	f.
																			Seaver
										Seaver		2	1	3
										Conner		6	6	6
																												Seaver		6	6	7
																												Dionne		1	0	5
										Sedgwick		1	5	8	2
										Norman		6	7	6	6
																			19	Norman	4	3	2
																				Dionne	6	6	6
										Dionne		2	6	6	8	7
										Cole		6	3	8	6	5

Section 2

	First round									Second round									Third round									Fourth round
										Cross		2	5	0
										Carleton		6	7	6
																			Carleton		6	6	6
																			Freshman		2	3	3
										Freshman		6	6	4	3	6
										Behr		1	3	6	6	1
																													Carleton	6	6	6
																												7	Whitman	3	2	1
										Bailey		1	2	4
										Whitman		6	6	6
																			Whitman		3	8	6	7
																			Smith		6	6	0	5
										Neeley
										Smith		w/o

Section 3

	First round									Second round									Third round									Fourth round
										Ryerson		0	1	1
										Collins		6	6	6
																			Collins		2	6	8	3
																			RF Doherty		6	2	10	6
										Merrill		1	2	1
										RF Doherty		6	6	6
																												RF Doherty		6	6	6
																												Paret		0	1	2
										Henshaw		4	1	2
										Paret		6	6	6
																			Paret		3	8	6	10
																			Beals		6	6	3	8
										Horton		3	4	4
										Beals		6	6	6

Section 4

	First round									Second round									Third round									Fourth round
										Colket		2	2	0
	Relyea		0	1	1					HL Doherty		6	6	6
	HL Doherty		6	6	6														9	HL Doherty	6	6	6
	Stevens		6	6	6															Stevens	4	2	2
	Dana		0	1	1					Stevens		w/o
	Leech									Stiness
	Stiness		w/o																										HL Doherty	6	6	6
	Miller		6	6	7																							3	Mahony	3	2	4
	Henshaw		0	1	5					Miller		7	6	7	6
	Peters									Dering		5	8	9	8
	Dering		w/o																Dering		5	3	2
	Gates		4	6	4	4													Mahony		7	6	6
	Stillman		6	2	6	6				Stillman		3	2	3
	3	Otis								Mahony		6	6	6
		Mahony	w/o

Section 5

	First round									Second round									Third round									Fourth round
	Read		6	4	5	4
	Horton		4	6	7	6				Horton		8	4	7	6
	Mahan		6	6	6					Mahan		6	6	5	0
	Adee		3	3	2														Horton		6	8	8
	Slocum		w/o																Melland		3	6	6
	Thomas									Slocum		5	2	4
	Melland		6	6	6					Melland		7	6	6
	Burlingame		0	0	0																							Horton		7	6	2
	EP Larned		6	6	6																							EP Larned		9	8	6
	Clarke		1	1	3					17	EP Larned	6	6	6
	Bartlett		3	5	6	1					Scott	2	2	2
	Scott		6	7	4	6													EP Larned		6	6	6
																			Avery		2	3	1
										Manson
										Avery		w/o

Section 6

	First round									Second round									Third round									Fourth round
										Morris		1	0	1
										Leonard		6	6	6
																			Leonard		6	6	6
																			Bull		1	4	2
										White		7	2	1	6	3
										Bull		5	6	6	3	6
																												Leonard		11	7	4	5	3
																												Huntington		9	5	6	7	6
										Burden		6	6	6
										Scott		4	0	4
																				Burden	1	2	4
																			5	Huntington	6	6	6
											Hoskins	2	2	2
										5	Huntington	6	6	6

Section 7

	First round									Second round									Third round									Fourth round
										Codman		7	6	6
										Appleton		5	2	3
																			Codman		6	6	6
																			Blanding		3	0	1
										Blanding		w/o
										Devens
																												Codman		0	2	0
																												Allen		6	6	6
										Reid
										Ridgway		w/o
																			Ridgway		5	4	1
																			Allen		7	6	6
										Havermayer
										Allen		w/o

Section 8

	First round									Second round									Third round									Fourth round
										Lamb		1	2	3
										Ward		6	6	6
																			Ward		w/o
																			Willis
										Willis		6	6	6
										Livermore		2	4	4
																												Ward		2	4	7	5
																												Clothier		6	6	5	7
										Holt
										Sands		w/o
																				Sands	2	6	3	1
																			1	Clothier	6	4	6	6
										Wright		6	4	4	1
										Clothier		4	6	6	6