1915 U.S. National Championships – Men's singles

William Johnston defeated Maurice McLoughlin 1–6, 6–0, 7–5, 10–8 in the final to win the men's singles tennis title at the 1915 U.S. National Championships.^[2] The event was held at the West Side Tennis Club in Forest Hills, New York in the United States.^[3]

Men's singles
1915 U.S. National Championships
Champion	William Johnston[1]
Runner-up	Maurice McLoughlin[1]
Score	1–6, 6–0, 7–5, 10–8

Draw

Finals

	Quarterfinals									Semifinals									Final
		Clarence Griffin	2	1	8	7	1
		William Johnston	6	6	6	5	6
											William Johnston	5	6	5	6	6
											R. Norris Williams	7	4	7	2	2
		R. Norris Williams	8	7	6
		William Rand	6	5	1
																				William Johnston	1	6	7	10
																				Maurice McLoughlin	6	0	5	8
		Frank Hunter	2	4	0
		Maurice McLoughlin	6	6	6
											Maurice McLoughlin	6	6	7
											Theodore Pell	2	0	5
		Irving Wright	3	1	1
		Theodore Pell	6	6	6

Earlier rounds

Section 1

	First round									Second round									Third round									Fourth round
	Graves		6	6	6
	Johnson		3	4	4					Graves		2	6	8
	McKay		3	6	6	2	1			Dawson		6	8	10
	Dawson		6	2	4	6	6												Dawson		3	5	2
	Cunningham		3	6	5	3													Griffin		6	7	6
	Garland		6	3	7	6				Garland		3	6	2	3
	Griffin		6	6	6					Griffin		6	2	6	6
	Thayer		2	2	1																							Griffin		6	6	6
	Wightman		3	1	7	4																						Law		2	4	2
	MacMullen		6	6	5	6				Wightman		6	6	6
	Cady		3	4	6	6				Toland		3	1	1
	Toland		6	6	2	8													Wightman		7	6	4	5	4
	O'Neale		9	6	6														Law		5	2	6	7	6
	Blair		7	2	2					O'Neale		6	2	4	4
	Major		6	2	4	5				Law		4	6	6	6
	Law		4	6	6	7

Section 2

	First round									Second round									Third round									Fourth round
	Man		6	6	6	6	2
	Watters		4	1	8	8	6			Watters		6	6	6
	Anderson		4	0	6					Talland		1	2	4
	Talland		6	6	8														Watters		2	1	2
	Hackett		1	2	8														Johnston		6	6	6
	Johnston		6	6	10					Johnston		8	6	6
	Pell		6	9	9					Pell		6	4	4
	Turnbull		1	7	7																							Johnston		3	6	6	7
	Martin		1	3	6																							Behr		6	3	2	5
	Behr		6	6	8					Behr		6	6	6
	Bowman		2	4	0					Phillips		0	3	4
	Phillips		6	6	6														Behr		4	6	6	6
	Parker		6	4	6	6													LeRoy		6	4	4	4
	Chambers		3	6	2	3				Parker		2	4	8
	Rosenbaum		5	3	0					LeRoy		6	6	10
	LeRoy		7	6	6

Section 3

	First round									Second round									Third round									Fourth round
	Palmer		2	3	1
	Thomas		6	6	6					Thomas		3	6	6	6
	Eaton		4	7	0	4				Copeland		6	2	4	3
	Copeland		6	5	6	6													Thomas		2	5	4
	Adoue		3	6	6	6													Adoue		6	7	6
	Brinsmade		6	2	3	1				Adoue		6	1	6	2	7
	Stevens		6	3	6	6				Stevens		3	6	4	6	5
	Kidder		4	6	2	3																						Adoue		3	1	0
	Inman		7	6	6																							Williams		6	6	6
	Childs		5	2	3					Inman		5	1	7
	Riker		w/	o						Williams		7	6	9
	Williams																		Williams		6	9	2	6
	Johnson		6	6	6														Hall		3	7	6	1
	Hooker		0	1	1					Johnson		16	6	2	6	2
	Hall		6	0	6	6				Hall		18	4	6	4	6
	Burrows		2	6	1	2

Section 4

	First round									Second round									Third round									Fourth round
	Forster		2	3	2
	Biddle		6	6	6					Biddle		6	6	6
	Rand		3	2	2					Peaslee		2	1	0
	Peaslee		6	6	6														Biddle		6	6	6
	Knox		6	4	6	6													Grinnell		1	2	2
	Geary		4	6	4	2				Knox		5	2	1
	Grinnell		6	6	6					Grinnell		7	6	6
	Robinson		2	2	2																							Biddle		6	3	3	6	3
	Blackstone		7	4	7	6																						Rand		3	6	6	2	6
	Fall		5	6	5	1				Blackstone		1	1	4
	Pate		3	6	7	6				Pate		6	6	6
	Drake		6	3	5	2													Pate		1	4	1
	Thomas		0	9	1	7	4												Rand		6	6	6
	Rand		6	7	6	5	6			Rand		6	6	6
	Plitt		6	6	6					Plitt		0	0	2
	Da Silva		1	0	2

Section 5

	First round									Second round									Third round									Fourth round
	Henshaw		4	1	1
	Anderson		6	6	6					Anderson		5	6	6	1	1
	Hunter		6	6	6					Hunter		7	4	4	6	6
	Sargeant		3	2	2														Hunter		10	6	2	2	6
	Dionne		7	6	11														Dionne		8	3	6	6	3
	De Camp		5	2	9					Dionne		6	6	6
	Vaile		2	6	7	6				Vaile		3	0	2
	McAllister		6	4	5	4																						Hunter		3	6	6	2	6
	Cole		w/	o																								Pfaffman		6	3	3	6	3
	Post									Post		3	0	0
	Brown		3	6	0	2				Pfaffman		6	6	6
	Pfaffman		6	3	6	6													Pfaffman		7	6	6
	Campbell		6	6	7														Campbell		5	4	1
	Doubleday		3	2	5					Campbell		7	6	3	6
	Allen		7	6	5	6	7			Allen		5	3	6	2
	Gibbons		9	1	7	0	5

Section 6

	First round									Second round									Third round									Fourth round
	Stoddart		6	3	7	6
	Wood		3	6	5	1				Wood		1	1	2
	Allen		w/	o						Beekman		6	6	6
	Beekman																		Beekman		2	6	2	2
	Roberts		1	5	0														McLoughlin		6	3	6	6
	Mathey		6	7	6					Mathey		1	2	6
	Kuhn		1	1	0					McLoughlin		6	6	8
	McLoughlin		6	6	6																							McLoughlin		6	6	1	6
	Cragin		6	8	6																							Alexander		3	2	6	3
	Johnston		8	10	8					Johnston		2	6	2
	Voshell		6	6	6					Voshell		6	8	6
	McClave		3	4	2														Voshell		4	4	2
	Roberts		3	6	4	6	4												Alexander		6	6	6
	Roberts		6	0	6	4	6			Roberts		4	1	1
	Niles		3	7	5	10	2			Alexander		6	6	6
	Alexander		6	5	7	8	6

Section 7

	First round									Second round									Third round									Fourth round
	Prentice		6	6	6
	Bourne		0	3	0					Prentice		6	7	7	6
	Coffey		6	6	6					Coffey		8	5	5	1
	Swain		4	4	1														Prentice		6	6	5	6
	Baggs		6	6	6														Phillips		0	3	7	0
	Boocock		0	1	2					Baggs		9	2	6	4	0
	Andrews		3	2	3					Phillips		7	6	4	6	6
	Phillips		6	6	6																							Prentice		5	4	1
	Sommer		0	0	0																							Wright		7	6	6
	Wright		6	6	6					Wright		6	0	6	6
	Cushman		2	2	1					Caner		2	6	1	3
	Caner		6	6	6														Wright		6	6	6
	Frelinghuysen		6	6	8														Frelinghuysen		3	2	0
	Thomas		2	1	6					Frelinghuysen		3	6	9	4	6
	Riker		5	1	6	5				Harvey		6	1	7	6	4
	Harvey		7	6	4	7

Section 8

	First round									Second round									Third round									Fourth round
	Whitney		6	4	6	6
	Throckmorton		3	6	4	1				Whitney		3	4	6	3
	Pell		6	6	6					Pell		6	6	0	6
	Fox		2	0	2														Pell		6	6	6
	Newhouse		0	2	4														Washburn		4	4	3
	Washburn		6	6	6					Washburn		7	9	6	6
	McKenzie		1	0	2					Church		5	11	4	2
	Church		6	6	6																							Pell		6	6	6
	Nettleton		4	9	2	5																						Bull		1	2	3
	Bassford		6	7	6	7				Bassford		6	4	4	2
	Bull		4	12	6	6				Bull		4	6	6	6
	Mahan		6	10	2	4													Bull		8	7	5	6
	VanDeventer		4	3	2														Harris		6	5	7	2
	Plummer		6	6	6					Plummer		1	1	1
	Harris		6	6	6					Harris		6	6	6
	Russell		1	1	1