2018 Gimcheon Open ATP Challenger

The 2018 Gimcheon Open ATP Challenger was a professional tennis tournament played on hard courts. It was the fifth edition of the tournament which was part of the 2018 ATP Challenger Tour. It took place in Gimcheon, Korea between 7 and 13 May 2018.

2018 Gimcheon Open ATP Challenger
Date	7–13 May
Edition	5th
Draw	32S / 16D
Surface	Hard
Location	Gimcheon, South Korea
Champions
Singles
Yoshihito Nishioka
Doubles
Ruan Roelofse / John-Patrick Smith

Singles main-draw entrants

Seeds

Country	Player	Rank1	Seed
AUS	Matthew Ebden	81	1
CAN	Vasek Pospisil	83	2
AUS	Jordan Thompson	94	3
ISR	Dudi Sela	97	4
TPE	Lu Yen-hsun	109	5
USA	Mackenzie McDonald	146	6
JPN	Go Soeda	149	7
TPE	Jason Jung	154	8

• ¹ Rankings are as of 30 April 2018.^[1]

Other entrants

The following players received wildcards into the singles main draw:

• Chung Yun-seong
• Lee Duck-hee
• Lee Young-seok
• Park Ui-sung

The following players received entry from the qualifying draw:

• Yoshihito Nishioka
• Makoto Ochi
• Renta Tokuda
• Wishaya Trongcharoenchaikul

The following player received entry as a lucky loser:

• Luke Saville

Champions

Singles

Main article: 2018 Gimcheon Open ATP Challenger – Singles

• Yoshihito Nishioka def. Vasek Pospisil 6–4, 7–5.

Doubles

Main article: 2018 Gimcheon Open ATP Challenger – Doubles

• Ruan Roelofse / John-Patrick Smith def. Sanchai Ratiwatana / Sonchat Ratiwatana 6–2, 6–3.