2025 Santaizi ATP Challenger – Doubles

Doubles
2025 Santaizi ATP Challenger
Champions	Nathaniel Lammons Jean-Julien Rojer
Runners-up	Kaito Uesugi Seita Watanabe
Score	7–6(7–4), 7–6(8–6)

Ray Ho and Nam Ji-sung were the defending champions^[1] but only Nam chose to defend his title, partnering Takeru Yuzuki. They lost in the first round to Pruchya Isaro and Niki Kaliyanda Poonacha.

Nathaniel Lammons and Jean-Julien Rojer won the title after defeating Kaito Uesugi and Seita Watanabe 7–6^(7–4), 7–6^(8–6) in the final.^[2]

Key

	First round							Quarterfinals							Semifinals							Final
	1	N Oberleitner M Vrbenský	2	3
		Y-h Hsu T-h Huang	6	6					Y-h Hsu T-h Huang	78	3	[8]
		U-s Park K Uchida	3	5					K Tamm A Weber	66	6	[10]
		K Tamm A Weber	6	7												K Tamm A Weber	3	2
	3	N Lammons J-J Rojer	6	6											3	N Lammons J-J Rojer	6	6
		T Ichikawa G Lomakin	4	4				3	N Lammons J-J Rojer	6	6
		S Hazawa Leo Vithoontien	61	65					M Imamura Y Shimizu	2	4
		M Imamura Y Shimizu	77	77																		3	N Lammons J-J Rojer	77	78
		FC Alcantara L Castelnuovo	6	6																		4	K Uesugi S Watanabe	64	66
		M Gengel M Sasikumar	4	2					FC Alcantara L Castelnuovo	3	3
		SDP Dev Nitin Kumar Sinha	4	64				4	K Uesugi S Watanabe	6	6
	4	K Uesugi S Watanabe	6	77											4	K Uesugi S Watanabe	77	6
	WC	C-p Hsieh A Santillan	6	6											WC	C-p Hsieh A Santillan	62	4
	WC	Jeffrey Hsu J Jung	0	2				WC	C-p Hsieh A Santillan	6	64	[10]
		P Isaro N Kaliyanda Poonacha	4	78	[14]				P Isaro N Kaliyanda Poonacha	4	77	[8]
	2	J-s Nam T Yuzuki	6	66	[12]

• Main draw