| Yokkaichi challenger | Round | Result | H | A | 
		
			| 30.11. |  | King / Stald - Nam J / Wong | QF | 6-4, 66-7, 12-10 | 1.20 | 3.93 | 
		
			| 29.11. |  | Nam J / Wong - Gonza / Sun F | R16 | 6-3, 6-4 | 1.96 | 1.72 | 
		
			| Yokohama challenger | Round | Result | H | A | 
		
			| 23.11. |  | Chung / Gonza - Harri / Nam J | QF | 7-67, 6-3 | 2.21 | 1.59 | 
		
			| 22.11. |  | Harri / Nam J - Kaliy / Shara | R16 | 7-65, 4-6, 11-9 | 1.32 | 2.98 | 
		
			| Matsuyama challenger | Round | Result | H | A | 
		
			| 10.11. |  | Matsu / Uesug - Nam J / Uchid | SF | 6-3, 66-7, 12-10 | 1.76 | 1.96 | 
		
			| 09.11. |  | Nam J / Uchid - Raja / Raman | QF | 6-2, 6-4 | 1.64 | 2.11 | 
		
			| 08.11. |  | Nam J / Uchid - Hong / Jung | R16 | 7-5, 6-4 |  |  | 
		
			| Sydney challenger | Round | Result | H | A | 
		
			| 04.11. |  | Segge / Trhac - Gonza / Nam J | F | 6-4, 6-4 | 1.41 | 2.71 | 
		
			| 03.11. |  | Gonza / Nam J - Bayld / Pears | SF | 7-66, 3-6, 10-8 | 1.32 | 2.87 | 
		
			| 02.11. |  | Gonza / Nam J - Putte / Rai A | QF | 6-2, 7-5 | 1.41 | 2.43 | 
		
			| 31.10. |  | Gonza / Nam J - Mochi / Noguc | R16 | 6-3, 6-4 | 1.73 | 2.07 | 
		
			| Playford 2 challenger | Round | Result | H | A | 
		
			| 25.10. |  | Hong / Ly N. - Gonza / Nam J | R16 | 6-2, 6-2 | 3.18 | 1.27 | 
		
			| Grodzisk Mazowiecki challenger | Round | Result | H | A | 
		
			| 16.08. |  | Santi / Stath - Nam J / Nedun | R16 | 6-1, 6-2 | 2.01 | 1.72 | 
		
			| Porto challenger | Round | Result | H | A | 
		
			| 02.08. |  | Escof / Paris - Nam J / Song | R16 | 6-1, 6-3 | 4.00 | 1.20 | 
		
			| Segovia challenger | Round | Result | H | A | 
		
			| 28.07. |  | Added / Herbe - Nam J / Song | SF | 6-2, 6-3 | 1.66 | 2.09 | 
		
			| 27.07. |  | Nam J / Song - Stepa / Whiti | QF | 7-67, 7-5 | 1.07 | 6.79 | 
		
			| 25.07. |  | Nam J / Song - Bellu / Bouqu | R16 | 6-4, 6-4 | 1.53 | 2.33 | 
		
			| Pozoblanco challenger | Round | Result | H | A | 
		
			| 22.07. |  | Nam J / Song - Johns / Lock | F | 2-6, 6-4, 10-8 | 1.72 | 2.01 | 
		
			| 21.07. |  | Nam J / Song - Added / Herbe | SF | 7-65, 6-3 | 2.62 | 1.44 | 
		
			| 20.07. |  | Nam J / Song - Echev / Monte | QF | 6-4, 6-3 | 1.24 | 3.63 | 
		
			| 19.07. |  | Nam J / Song - Barro / Llama | R16 | 6-3, 4-6, 11-9 | 1.19 | 4.02 | 
		
			| Chicago challenger | Round | Result | H | A | 
		
			| 13.07. |  | Harri / Sandg - Nam J / Sitak | QF | 6-2, 6-1 | 2.00 | 1.72 | 
		
			| 12.07. |  | Nam J / Sitak - Putte / Sincl | R16 | 6-3, 6-2 | 1.53 | 2.34 | 
		
			| Palmas del Mar challenger | Round | Result | H | A | 
		
			| 16.06. |  | Matsu / Uesug - Nam J / Sitak | SF | 6-4, 7-5 | 2.62 | 1.43 | 
		
			| 15.06. |  | Nam J / Sitak - Alves / Heide | QF | 6-1, 64-7, 10-8 | 1.47 | 2.58 | 
		
			| 14.06. |  | Nam J / Sitak - Diez / Galar | R16 | 6-4, 7-5 | 1.40 | 2.78 | 
		
			| Tyler challenger | Round | Result | H | A | 
		
			| 08.06. |  | Colli / Valie - Nam J / Sitak | R16 | 6-3, 6-4 | 6.68 | 1.08 | 
		
			| Little Rock challenger | Round | Result | H | A | 
		
			| 03.06. |  | Nam J / Sitak - Galar / Moren | F | 6-4, 6-4 | 1.55 | 2.24 | 
		
			| 03.06. |  | Nam J / Sitak - Lawso / Pervo | SF | 7-65, 6-2 | 2.11 | 1.65 | 
		
			| 01.06. |  | Nam J / Sitak - Manso / Stath | QF | 6-4, 7-61 | 1.86 | 1.84 | 
		
			| 30.05. |  | Nam J / Sitak - Kadhe / Masur | R16 | 1-6, 7-63, 10-6 | 2.21 | 1.59 | 
		
			| Busan challenger | Round | Result | H | A | 
		
			| 12.05. |  | Purce / Stath - Kadhe / Nam J | SF | 6-4, 4-6, 10-8 | 1.63 | 2.10 | 
		
			| 11.05. |  | Kadhe / Nam J - Choe / Park | QF | 7-63, 6-3 | 1.08 | 6.53 | 
		
			| 10.05. |  | Kadhe / Nam J - Harri / Smith | R16 | 6-4, 6-2 | 2.35 | 1.50 | 
		
			| Gwangju challenger | Round | Result | H | A | 
		
			| 05.05. |  | Harri / Smith - Kadhe / Nam J | SF | 6-4, 65-7, 10-7 | 1.50 | 2.44 | 
		
			| 04.05. |  | Kadhe / Nam J - Gonza / Shimi | QF | 6-0, 6-1 | 1.60 | 2.12 | 
		
			| 03.05. |  | Kadhe / Nam J - Choe / Park | R16 | 6-4, 6-2 | 1.07 | 6.48 | 
		
			| Seoul challenger | Round | Result | H | A | 
		
			| 26.04. |  | Hijik / Polma - Nam J / Song | R16 | 6-3, 6-4 | 1.52 | 2.28 | 
		
			| Puerto Vallarta challenger | Round | Result | H | A | 
		
			| 09.03. |  | Hach / Mahut - Hong / Nam J | R16 | 7-63, 6-3 | 1.33 | 3.05 | 
		
			| Waco challenger | Round | Result | H | A | 
		
			| 01.03. |  | Saban / Saban - Hong / Nam J | R16 | 6-1, 6-1 | 1.68 | 2.02 | 
		
			| Bangalore challenger | Round | Result | H | A | 
		
			| 21.02. |  | Lock / Santi - Nam J / Song | R16 | 6-3, 3-6, 10-5 | 3.32 | 1.29 | 
		
			| Chennai challenger | Round | Result | H | A | 
		
			| 16.02. |  | Clark / Kadhe - Nam J / Song | QF | 1-6, 7-68, 10-8 | 3.51 | 1.27 | 
		
			| 15.02. |  | Nam J / Song - Raman / Vardh | R16 | 1-6, 7-64, 10-5 | 1.32 | 3.01 | 
		
			| Nonthaburi 3 challenger | Round | Result | H | A | 
		
			| 21.01. |  | Nam J / Song - Choin / Parke | F | 6-4, 6-4 | 1.49 | 2.35 | 
		
			| 20.01. |  | Nam J / Song - Ionel / Zuk K | SF | 7-5, 7-63 | 1.50 | 2.40 | 
		
			| 19.01. |  | Nam J / Song - Donsk / Yevse | QF |  |  |  | 
		
			| 18.01. |  | Nam J / Song - Alcan / Moriy | R16 | 6-4, 7-60 | 1.40 | 2.61 | 
		
			| Nonthaburi 2 challenger | Round | Result | H | A | 
		
			| 13.01. |  | Rungk / Santi - Nam J / Song | SF | 6-1, 66-7, 10-4 | 2.09 | 1.67 | 
		
			| 12.01. |  | Nam J / Song - Sanch / Steve | QF | 7-66, 6-3 | 1.16 | 4.61 | 
		
			| 11.01. |  | Nam J / Song - Matsu / Uesug | R16 | 6-2, 6-4 | 1.50 | 2.43 | 
		
			| Nonthaburi challenger | Round | Result | H | A | 
		
			| 06.01. |  | Genge / Pavla - Nam J / Song | SF | 6-4, 6-3 | 1.64 | 2.14 | 
		
			| 05.01. |  | Nam J / Song - Tiran / Trung | QF |  | 1.25 | 3.57 | 
		
			| 04.01. |  | Nam J / Song - Kelly / Purce | R16 | 7-60, 7-62 | 1.80 | 1.92 |