2017 Keio Challenger – Men's singles explained

See main article: article and 2017 Keio Challenger.

Taro Daniel was the defending champion but chose not to defend his title.

Yūichi Sugita won the title after defeating Kwon Soon-woo 6–4, 2–6, 7–6^(7–2) in the final.

Draw

Bottom half

References

• Main Draw
• Qualifying Draw