|   Pune challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 13.11. | 
			  | 
			Diez S. - Takahashi Y. | 
			2R | 
			6-2, 6-2 | 
			1.16 | 
			4.82 | 
		
		
			| 11.11. | 
			  | 
			Takahashi Y. - Vishwakarma S. | 
			1R | 
			6-0, 3-6, 6-3 | 
			1.14 | 
			5.25 | 
		
		
			|   Kobe challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 04.11. | 
			  | 
			Chung Y. - Takahashi Y. | 
			1R | 
			7-63, 7-61 | 
			1.40 | 
			2.73 | 
		
		
			|   Liuzhou challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 21.10. | 
			  | 
			Kalenichenko D. - Takahashi Y. | 
			1R | 
			6-2, 6-2 | 
			2.62 | 
			1.45 | 
		
		
			|   Futures 2019 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 04.10. | 
			  | 
			Nishiwaki K. - Takahashi Y. | 
			QF | 
			6-0, 3-6, 6-2 | 
			2.88 | 
			1.32 | 
		
		
			| 03.10. | 
			  | 
			Takahashi Y. - Nakagawa N. | 
			R16 | 
			6-4, 6-3 | 
			1.48 | 
			2.38 | 
		
		
			| 01.10. | 
			  | 
			Takahashi Y. - Trinh L. | 
			1R | 
			6-1, 6-4 | 
			1.05 | 
			7.28 | 
		
		
			|   Kaohsiung challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 17.09. | 
			  | 
			Bourchier H. - Takahashi Y. | 
			1R | 
			3-6, 6-1, 6-2 | 
			2.01 | 
			1.74 | 
		
		
			| 16.09. | 
			  | 
			Takahashi Y. - Lee K. | 
			Q-SF | 
			6-4, 6-2 | 
			1.90 | 
			1.81 | 
		
		
			|   Shanghai challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 11.09. | 
			  | 
			Uchida K. - Takahashi Y. | 
			2R | 
			4-6, 7-68, 6-0 | 
			1.66 | 
			2.13 | 
		
		
			| 10.09. | 
			  | 
			Takahashi Y. - Wang C. | 
			1R | 
			6-4, 6-4 | 
			1.32 | 
			3.16 | 
		
		
			|   Futures 2019 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 07.09. | 
			  | 
			Ochi M. - Takahashi Y. | 
			SF | 
			6-2, 4-6, 6-1 | 
			2.22 | 
			1.56 | 
		
		
			| 06.09. | 
			  | 
			Takahashi Y. - Saito T. | 
			QF | 
			6-2, 6-2 | 
			1.42 | 
			2.57 | 
		
		
			| 05.09. | 
			  | 
			Takahashi Y. - Mousley B. | 
			R16 | 
			6-2, 65-7, 6-3 | 
			1.60 | 
			2.13 | 
		
		
			| 04.09. | 
			  | 
			Takahashi Y. - Huang T. | 
			1R | 
			6-2, 6-1 | 
			1.16 | 
			4.33 | 
		
		
			|   Baotou challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 28.08. | 
			  | 
			Silva F. - Takahashi Y. | 
			2R | 
			6-3, 6-0 | 
			1.11 | 
			5.83 | 
		
		
			| 27.08. | 
			  | 
			Takahashi Y. - Purcell R. | 
			1R | 
			7-5, 6-3 | 
			1.23 | 
			3.87 | 
		
		
			|   Yokkaichi challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 08.08. | 
			  | 
			Chung H. - Takahashi Y. | 
			R16 | 
			3-6, 6-1, 6-4 | 
			1.05 | 
			8.81 | 
		
		
			| 07.08. | 
			  | 
			Takahashi Y. - Nishiwaki K. | 
			2R | 
			7-5, 3-6, 6-3 | 
			1.23 | 
			3.85 | 
		
		
			|   Chengdu challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 30.07. | 
			  | 
			Bai Y. - Takahashi Y. | 
			2R | 
			6-4, 6-2 | 
			1.18 | 
			4.44 | 
		
		
			| 29.07. | 
			  | 
			Takahashi Y. - Okamura I. | 
			1R | 
			6-1, 6-2 | 
			1.11 | 
			5.55 | 
		
		
			|   Futures 2019 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 26.07. | 
			  | 
			Tokuda R. - Takahashi Y. | 
			QF | 
			6-1, 7-5 | 
			1.39 | 
			2.66 | 
		
		
			| 25.07. | 
			  | 
			Takahashi Y. - Yamasaki J. | 
			R16 | 
			6-2, 6-2 | 
			2.21 | 
			1.56 | 
		
		
			| 24.07. | 
			  | 
			Takahashi Y. - Renard L. | 
			1R | 
			5-7, 7-63, 6-2 | 
			1.09 | 
			5.82 | 
		
		
			| 18.07. | 
			  | 
			Yu C. - Takahashi Y. | 
			R16 | 
			7-5, 6-2 | 
			4.10 | 
			1.19 | 
		
		
			| 16.07. | 
			  | 
			Takahashi Y. - Tsai C. | 
			1R | 
			7-64, 6-1 | 
			1.07 | 
			6.47 | 
		
		
			| 25.06. | 
			  | 
			Zheng W. - Takahashi Y. | 
			1R | 
			6-4, 6-2 | 
			5.13 | 
			1.11 | 
		
		
			| 14.06. | 
			  | 
			Tseng C. - Takahashi Y. | 
			QF | 
			4-6, 7-5, 6-1 | 
			1.59 | 
			2.16 | 
		
		
			| 13.06. | 
			  | 
			Takahashi Y. - Zhu M. | 
			R16 | 
			6-3, 3-6, 6-3 | 
			1.13 | 
			5.07 | 
		
		
			| 12.06. | 
			  | 
			Takahashi Y. - Yeung P. | 
			1R | 
			6-4, 6-3 | 
			1.11 | 
			5.31 | 
		
		
			| 07.06. | 
			  | 
			Sekiguchi S. - Takahashi Y. | 
			QF | 
			6-3, 6-3 | 
			1.26 | 
			3.39 | 
		
		
			| 06.06. | 
			  | 
			Takahashi Y. - Vidal Azorin J. | 
			R16 | 
			6-2, 7-65 | 
			1.36 | 
			2.86 | 
		
		
			| 05.06. | 
			  | 
			Takahashi Y. - Becroft I. | 
			1R | 
			6-4, 6-3 | 
			1.01 | 
			10.84 | 
		
		
			| 23.05. | 
			  | 
			Stevenson K. - Takahashi Y. | 
			R16 | 
			1-6, 6-4, 6-2 | 
			4.60 | 
			1.14 | 
		
		
			| 21.05. | 
			  | 
			Takahashi Y. - Wattanakul P. | 
			1R | 
			6-4, 6-4 | 
			1.07 | 
			6.37 | 
		
		
			|   Gwangju challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 14.05. | 
			  | 
			Mukund S. - Takahashi Y. | 
			2R | 
			6-1, 6-4 | 
			1.71 | 
			2.04 | 
		
		
			|   Puerto Vallarta challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 04.05. | 
			  | 
			Smith J. - Takahashi Y. | 
			QF | 
			6-3, 6-4 | 
			1.37 | 
			2.93 | 
		
		
			| 02.05. | 
			  | 
			Takahashi Y. - Ward J. | 
			R16 | 
			2-6, 6-4, 6-3 | 
			3.84 | 
			1.23 | 
		
		
			| 01.05. | 
			  | 
			Takahashi Y. - Ayeni A. | 
			2R | 
			6-4, 4-6, 6-3 | 
			1.40 | 
			2.79 | 
		
		
			| 29.04. | 
			  | 
			Takahashi Y. - Ortega-Olmedo R. | 
			1R | 
			7-5, 6-1 | 
			3.36 | 
			1.30 | 
		
		
			|   Leon challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 22.04. | 
			  | 
			Ortega-Olmedo R. - Takahashi Y. | 
			1R | 
			6-4, 6-4 | 
			1.38 | 
			2.86 | 
		
		
			|   San Luis Potosi chall. | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 15.04. | 
			  | 
			Mena F. - Takahashi Y. | 
			1R | 
			4-6, 6-3, 6-0 | 
			1.15 | 
			5.08 | 
		
		
			|   Taipei challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 08.04. | 
			  | 
			Tokuda R. - Takahashi Y. | 
			1R | 
			6-2, 6-1 | 
			1.64 | 
			2.15 | 
		
		
			|   Futures 2019 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 06.04. | 
			  | 
			Mochizuki Y. - Takahashi Y. | 
			SF | 
			7-64, 6-4 | 
			2.42 | 
			1.48 | 
		
		
			| 05.04. | 
			  | 
			Takahashi Y. - Tanaka Y. | 
			QF | 
			7-5, 6-2 | 
			1.22 | 
			3.76 | 
		
		
			| 04.04. | 
			  | 
			Takahashi Y. - Saitoh K. | 
			R16 | 
			6-2, 6-1 | 
			1.15 | 
			4.55 | 
		
		
			| 02.04. | 
			  | 
			Takahashi Y. - Noguchi R. | 
			1R | 
			6-3, 3-6, 7-5 | 
			1.53 | 
			2.31 | 
		
		
			| 22.03. | 
			  | 
			Yamasaki J. - Takahashi Y. | 
			QF | 
			6-3, 6-1 | 
			2.42 | 
			1.48 | 
		
		
			| 21.03. | 
			  | 
			Takahashi Y. - Tajima N. | 
			R16 | 
			6-3, 6-2 | 
			1.36 | 
			2.80 | 
		
		
			| 19.03. | 
			  | 
			Takahashi Y. - Lu T. | 
			1R | 
			5-3 | 
			1.29 | 
			3.35 | 
		
		
			|   Drummondville challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 12.03. | 
			  | 
			Draxl L. - Takahashi Y. | 
			1R | 
			6-3, 6-2 | 
			2.30 | 
			1.57 | 
		
		
			|   Futures 2019 | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 05.03. | 
			  | 
			Imai S. - Takahashi Y. | 
			1R | 
			6-1, 5-7, 6-3 | 
			2.05 | 
			1.66 | 
		
		
			|   Yokohama challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 25.02. | 
			  | 
			Echargui M. - Takahashi Y. | 
			1R | 
			7-5, 5-7, 6-2 | 
			2.63 | 
			1.44 | 
		
		
			|   Launceston challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 31.01. | 
			  | 
			Purcell M. - Takahashi Y. | 
			R16 | 
			6-4, 6-4 | 
			1.22 | 
			3.93 | 
		
		
			| 30.01. | 
			  | 
			Takahashi Y. - Moriya H. | 
			2R | 
			6-3, 6-4 | 
			3.04 | 
			1.34 | 
		
		
			| 28.01. | 
			  | 
			Takahashi Y. - Altmaier D. | 
			1R | 
			4-6, 6-4, 6-4 | 
			4.05 | 
			1.22 | 
		
		
			|   Da Nang challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 08.01. | 
			  | 
			Avidzba A. - Takahashi Y. | 
			2R | 
			6-4, 6-2 | 
			1.91 | 
			1.82 | 
		
		
			|   Noumea challenger | 
			Round | 
			Result | 
			H | 
			A | 
		
		
			| 31.12. | 
			  | 
			Sakharov G. - Takahashi Y. | 
			1R | 
			6-4, 6-1 | 
			1.23 | 
			3.85 |