The 2013 Keio Challenger was a professional tennis tournament played on hard courts. It was the ninth edition of the tournament which was part of the 2013 ATP Challenger Tour. It took place in Yokohama, Japan between 11 and 17 November 2013. Mathew Ebden was the tournament champion over Go Soeda.
| 2013 Keio Challenger | |
|---|---|
| Date | 11–17 November |
| Edition | 9th |
| Surface | Hard |
| Location | Yokohama, Japan |
| Champions | |
| Singles | |
 Matthew Ebden | |
| Doubles | |
 Bradley Klahn /  Michael Venus | |
Singles main-draw entrants
editSeeds
edit| Country | Player | Rank1 | Seed |
|---|---|---|---|
| AUS
|
Matthew Ebden | 94 | 1 |
 SLO
|
Blaž Kavčič | 98 | 2 |
 JPN
|
Go Soeda | 115 | 3 |
| USA
|
Bradley Klahn | 118 | 4 |
| AUS
|
James Duckworth | 132 | 5 |
 FRA
|
Pierre-Hugues Herbert | 160 | 6 |
| JPN
|
Yūichi Sugita | 164 | 7 |
| JPN
|
Tatsuma Ito | 169 | 8 |
- 1 Rankings are as of November 4, 2013.
Other entrants
editThe following players received wildcards into the singles main draw:
Borna Ćorić
Yoshihito Nishioka- Masato Shiga
- Kaichi Uchida
The following players used protected ranking into the singles main draw:
The following players received entry from the qualifying draw:
Chase Buchanan
Chung Hyeon- Shuichi Sekiguchi
- Yasutaka Uchiyama
Champions
editSingles
edit
Matthew Ebden def. Go Soeda 2–6, 7–6(7–3), 6–3
Doubles
edit- Bradley Klahn /
Michael Venus def. 
Sanchai Ratiwatana / Sonchat Ratiwatana 7–5, 6–1
