2018 Seoul Open Challenger – Doubles

Hsieh Cheng-peng and Peng Hsien-yin were the defending champions but chose to defend their title with different partners. Hsieh partnered Christopher Rungkat but lost in the quarterfinals to Toshihide Matsui and Frederik Nielsen. Peng partnered Aliaksandr Bury but lost in the semifinals to Chen Ti and Yi Chu-huan.

Doubles
2018 Seoul Open Challenger
Champions	Toshihide Matsui Frederik Nielsen
Runners-up	Chen Ti Yi Chu-huan
Final score	6–4, 7–6^(7–3)

Main article: 2018 Seoul Open Challenger

Matsui and Nielsen won the title after defeating Chen and Yi 6–4, 7–6^(7–3) in the final.

Seeds

1. Hsieh Cheng-peng / Christopher Rungkat (Quarterfinals)
2. Sanchai Ratiwatana / Sonchat Ratiwatana (First round)
3. Aliaksandr Bury / Peng Hsien-yin (Semifinals)
4. Matt Reid / Dudi Sela (Quarterfinals)

Draw

Key

• Q = Qualifier
• WC = Wild Card
• LL = Lucky Loser
• Alt = Alternate
• SE = Special Exempt
• PR = Protected Ranking
• ITF = ITF entry
• JE = Junior Exempt
• w/o = Walkover
• r = Retired
• d = Defaulted

	First Round							Quarterfinals							Semifinals							Final
	1	C-p Hsieh C Rungkat	6	3	[10]
	WC	Kim Yu-seob Lim Hyung-chan	4	6	[2]			1	C-p Hsieh C Rungkat	6^2	1
		T Matsui F Nielsen	6	6					T Matsui F Nielsen	7^7	6
	WC	Kim Young-seok D-h Lee	4	2												T Matsui F Nielsen	6	3	[15]
	4	M Reid D Sela	1	6	[10]											T Ito M McDonald	4	6	[13]
	LL	M Banes B Ellis	6	3	[8]			4	M Reid D Sela	4	5
		T Ito M McDonald	4	6	[10]				T Ito M McDonald	6	7
	WC	Lim Min-seob Yoon Il-sang	6	3	[2]																		T Matsui F Nielsen	6	7^7
		R Gonzales J Jung	4	6	[12]																		T Chen C-h Yi	4	6^3
	Q	Y-s Chung Yo Watanuki	6	2	[10]				R Gonzales J Jung	4	6	[6]
		K Majchrzak L Saville	2	4				3	A Bury H-y Peng	6	1	[10]
	3	A Bury H-y Peng	6	6											3	A Bury H-y Peng	4	6^4
		D Wu Ze Zhang	6	6												T Chen C-h Yi	6	7^7
		M Gong Y Uchiyama	2	3					D Wu Ze Zhang	5	2
		T Chen C-h Yi	7^8	4	[10]				T Chen C-h Yi	7	6
	2	Sa Ratiwatana So Ratiwatana	6^6	6	[8]

References

• Main Draw
• Qualifying Draw