Singles
2015 Keio Challenger
Champion	Taro Daniel
Runner-up	Go Soeda
Score	4–6 , 6–3 , 6–3

The Keio Challenger is a professional tennis tournament played on hardcourts. It is currently part of the ATP Challenger Tour and the ITF Women's Circuit. Having been held in Yokohama, Japan since 1999. In 2015, Taro Daniel won the men's singles title, defeating Go Soeda in the final 4–6 , 6–3 , 6–3.

Seeds

Draw

Finals

	Semifinals							Final
	5	Taro Daniel	6	6
	3	Tatsuma Ito	4	1
								5	Taro Daniel	4	6	6
								4	Go Soeda	6	3	3
	4	Go Soeda	77	6
	2	Matthew Ebden	62	4

Top half

	First round							Second round							Quarterfinals							Semifinals
	1	J Millman	4	4
		A Kudryavtsev	6	6					A Kudryavtsev	77	6
		J Wang	3	6	3				T-h Yang	64	2
		T-h Yang	6	3	6											A Kudryavtsev	0	3
		O Jasika	6	6											5	T Daniel	6	6
		Y Bai	1	4					O Jasika	3	61
	Q	Yuya Kibi	1	3				5	T Daniel	6	77
	5	T Daniel	6	6																		5	T Daniel	6	6
	3	T Ito	6	7																		3	T Ito	4	1
	Q	K Takeuchi	2	5				3	T Ito	6	6
		T Chen	4	3					B Klein	4	4
		B Klein	6	6											3	T Ito	6	77
		Z Li	5	61												J Thompson	4	64
		J Thompson	7	77					J Thompson	1	6	77
		H Moriya	61	4				7	K Kravchuk	6	3	64
	7	K Kravchuk	77	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
	8	Y Nishioka	63	77	4
	Q	P Kobelt	77	61	2r			8	Y Nishioka	6	7
	WC	K Uesugi	65	1					J Jung	2	5
		J Jung	77	6											8	Y Nishioka	66	0
		D-h Lee	6	6											4	G Soeda	78	6
		Y Uchiyama	2	4					D-h Lee	5	4
		Gavin van Peperzeel	2	5				4	G Soeda	7	6
	4	G Soeda	6	7																		4	G Soeda	77	6
	6	Y Sugita	6	6																		2	M Ebden	62	4
	WC	Sora Fukuda	1	0				6	Y Sugita	6	6
	WC	Makoto Ochi	2	6	5			WC	M Shiga	1	2
	WC	Masato Shiga	6	4	7										6	Y Sugita	4	6	0
		F Škugor	78	6											2	M Ebden	6	1	6
		T Vorster	66	4					F Škugor	1	0r
	Q	Yu Watanuki	5	1				2	M Ebden	6	0
	2	M Ebden	7	6

References

• Main Draw
• Qualifying Draw