2018 Keio Challenger Explained

Date:	26 February – 4 March (ATP) 5 – 11 March (ITF)
Edition:	13th (ATP) 2nd (ITF)
Category:	ATP Challenger Tour ITF Women's Circuit
Surface:	Hard
Location:	Yokohama, Japan
Champms:	Yasutaka Uchiyama
Champws:	Veronika Kudermetova
Champmd:	Tobias Kamke / Tim Pütz
Champwd:	Laura Robson / Fanny Stollár

The 2018 Keio Challenger was a professional tennis tournament played on hard courts. It was the thirteenth (ATP) and second (ITF) editions of the tournament and part of the 2018 ATP Challenger Tour and the 2018 ITF Women's Circuit. It took place in Yokohama, Japan between 26 February and 4 March 2018 for the men's edition and between 5 and 11 March 2018 for the women's.

Men's singles main-draw entrants

Seeds

Country	Player	Rank¹	Seed
Australia	Jordan Thompson	95	1
Australia	John Millman	103	2
	Jason Jung	153	3
Japan	Go Soeda	156	4
France	Stéphane Robert	158	5
Korea, Republic of	Kwon Soon-woo	180	6
Japan	Tatsuma Ito	181	7
Korea, Republic of	Lee Duck-hee	190	8

¹ Rankings are as of 19 February 2018.

Other entrants

The following players received wildcards into the singles main draw:

The following player received entry into the singles main draw as a special exempt:

Blake Ellis

The following players received entry from the qualifying draw:

Chung Yun-seong
Hiroyasu Ehara
Hiroki Moriya
Jumpei Yamasaki

The following player received entry as a lucky loser:

Daniel Nguyen

Women's singles main-draw entrants

Seeds

Country	Player	Rank¹	Seed
Japan	Eri Hozumi	180	1
Japan	Junri Namigata	196	2
Japan	Miharu Imanishi	197	3
Italy	Georgia Brescia	202	4
United Kingdom	Laura Robson	218	5
Turkey	Ayla Aksu	226	6
Russian Federation	Veronika Kudermetova	227	7
China	Lu Jiajing	232	8