| Matsuyama challenger | Round | Result | H | A | 
		
			| 10.11. |  | Sween / Tu L. - Nam J / Song | QF | 6-3, 6-4 | 2.25 | 1.59 | 
		
			| 08.11. |  | Nam J / Song - Kono / Kusuh | R16 | 6-3, 6-4 | 1.13 | 5.18 | 
		
			| Yokohama challenger | Round | Result | H | A | 
		
			| 03.11. |  | Fujiw / Imamu - Nam J / Song | QF | 3-6, 6-2, 10-7 | 4.76 | 1.15 | 
		
			| 02.11. |  | Nam J / Song - Matsu / Uesug | R16 | 6-3, 7-67 | 1.30 | 3.23 | 
		
			| Busan challenger | Round | Result | H | A | 
		
			| 23.10. |  | Polma / Purce - Nam J / Song | F | 65-7, 6-2, 12-10 | 1.58 | 2.24 | 
		
			| 22.10. |  | Nam J / Song - Bhamb / Mynen | SF | 6-3, 6-1 | 2.21 | 1.61 | 
		
			| 20.10. |  | Nam J / Song - Manso / Neuch | QF | 5-7, 6-4, 12-10 | 1.45 | 2.62 | 
		
			| Gwangju challenger | Round | Result | H | A | 
		
			| 05.10. |  | Bhamb / Mynen - Hong / Nam J | R16 | 6-4, 6-3 | 1.37 | 2.74 | 
		
			| Seoul | Round | Result | H | A | 
		
			| 30.09. |  | Barri / Reyes - Nam J / Song | QF | 7-5, 3-6, 10-7 | 2.19 | 1.64 | 
		
			| 28.09. |  | Nam J / Song - Gallo / Lawso | R16 | 3-6, 6-3, 11-9 | 1.82 | 1.94 | 
		
			| Nonthaburi challenger | Round | Result | H | A | 
		
			| 27.08. |  | Donsk / Kachm - Nam J / Song | F | 6-3, 1-6, 10-7 | 1.93 | 1.43 | 
		
			| 26.08. |  | Nam J / Song - Isaro / Suksu | SF | 7-5, 7-5 | 1.37 | 2.92 | 
		
			| 25.08. |  | Nam J / Song - Matsu / Uesug | QF | 6-4, 6-4 | 1.50 | 2.40 | 
		
			| 24.08. |  | Nam J / Song - Hong / Shimi | R16 | 6-4, 7-64 | 1.34 | 3.00 | 
		
			| Astana 5 challenger | Round | Result | H | A | 
		
			| 23.07. |  | Nam J / Song - Pauls / Polja | F | 6-2, 3-6, 10-6 | 1.51 | 2.32 | 
		
			| 22.07. |  | Nam J / Song - Donsk / Kachm | SF | 6-1, 7-5 | 1.49 | 2.39 | 
		
			| 21.07. |  | Nam J / Song - Cukie / Popko | QF | 3-6, 6-3, 10-7 | 1.69 | 2.09 | 
		
			| 20.07. |  | Nam J / Song - Santi / Stath | R16 | 7-5, 65-7, 10-4 | 1.56 | 2.25 | 
		
			| Futures 2022 | Round | Result | H | A | 
		
			| 11.06. |  | Matsu / Uesug - Nam J / Song | F | 6-3, 0-6, 10-7 | 2.70 | 1.40 | 
		
			| 10.06. |  | Nam J / Song - Nakam / Okamu | SF | 6-1, 6-4 | 1.11 | 5.75 | 
		
			| 09.06. |  | Nam J / Song - Jang / Kim G | QF | 6-1, 6-0 | 1.07 | 7.00 | 
		
			| 08.06. |  | Nam J / Song - Inui / Suzuk | R16 | 6-4, 7-5 | 1.11 | 5.75 | 
		
			| 03.06. |  | Hong / Kim C - Nam J / Song | SF | 3-6, 7-5, 11-9 | 2.90 | 1.35 | 
		
			| 02.06. |  | Nam J / Song - Isomu / Masab | QF | 6-0, 6-3 | 1.06 | 8.00 | 
		
			| 01.06. |  | Nam J / Song - Charl / Rehma | R16 | 6-4, 6-1 | 1.00 | 9.90 | 
		
			| 23.04. |  | Nam J / Song - Bai Y / Kim C | F | 6-2, 6-4 | 1.36 | 2.82 | 
		
			| 22.04. |  | Nam J / Song - Isaro / Suksu | SF | 6-1, 5-7, 10-8 | 1.28 | 3.10 | 
		
			| 21.04. |  | Nam J / Song - Jasik / Sookt | QF | 6-4, 6-4 | 1.19 | 4.07 | 
		
			| 19.04. |  | Nam J / Song - Hua R / Steve | R16 | 6-2, 3-6, 14-12 | 1.08 | 6.28 | 
		
			| 16.04. |  | Nam J / Song - Hazaw / Niki | F | 6-1, 6-4 | 1.30 | 3.14 | 
		
			| 15.04. |  | Nam J / Song - Marke / Rai A | SF | 6-4, 6-3 | 1.20 | 3.95 | 
		
			| 14.04. |  | Nam J / Song - Isaro / Suksu | QF | 7-65, 6-3 | 1.12 | 5.24 | 
		
			| 12.04. |  | Nam J / Song - Nirun / Saeou | R16 | 6-4, 6-2 | 1.08 | 6.29 | 
		
			| 09.04. |  | Hong / Kim C - Nam J / Song | F | 4-6, 7-62, 10-8 | 2.87 | 1.35 | 
		
			| 08.04. |  | Nam J / Song - Ichik / Yamas | SF | 7-64, 5-7, 10-8 | 1.10 | 5.52 | 
		
			| 07.04. |  | Nam J / Song - Hua R / Wong | QF | 6-2, 6-3 | 1.09 | 5.75 | 
		
			| 05.04. |  | Nam J / Song - Kalya / Soman | R16 | 6-4, 6-2 | 1.07 | 7.15 | 
		
			| 27.03. |  | Nam J / Song - Broom / Patte | F | 6-3, 7-64 | 1.66 | 2.06 | 
		
			| 26.03. |  | Nam J / Song - Nanda / Svajd | SF | 7-65, 6-2 | 1.35 | 2.80 | 
		
			| 24.03. |  | Nam J / Song - Cozbi / Shima | QF | 7-62, 6-3 | 1.51 | 2.28 | 
		
			| 23.03. |  | Nam J / Song - Moros / Varga | R16 | 6-2, 6-3 | 1.04 | 8.63 | 
		
			| 20.03. |  | Nam J / Song - Cukie / Roelo | F | 6-2, 6-0 | 1.56 | 2.24 | 
		
			| 19.03. |  | Nam J / Song - Damm / Hijik | SF | 3-6, 6-3, 10-4 | 1.44 | 2.51 | 
		
			| 18.03. |  | Nam J / Song - Shima / Takah | QF | 6-1, 6-2 | 1.35 | 2.90 | 
		
			| 17.03. |  | Nam J / Song - Miche / Quinn | R16 | 7-5, 1-6, 10-8 | 1.11 | 5.19 |