| Singles | |
|---|---|
| 2016 Santaizi ATP Challenger | |
| Champion |  Daniel Evans |
| Runner-up |  Konstantin Kravchuk |
| Score | 3–6, 6–4, 6–4 |
Sam Groth was the defending champion but lost in the first round to Yuya Kibi.
Daniel Evans won the title after defeating Konstantin Kravchuk 3–6, 6–4, 6–4 in the final. [1]
Ričardas Berankis (semifinals)
Sam Groth (first round)
Tatsuma Ito (quarterfinals) Yūichi Sugita (first round)
Sergiy Stakhovsky (quarterfinals) Daniel Evans (champion) Go Soeda (first round) Konstantin Kravchuk (final)| Semifinals | Final | ||||||||||||
| 1 | Ričardas Berankis | 3 | 65 | ||||||||||
| 6 | Daniel Evans | 6 | 77 | ||||||||||
| 6 | Daniel Evans | 3 | 6 | 6 | |||||||||
| 8 | Konstantin Kravchuk | 6 | 4 | 4 | |||||||||
| 8 | Konstantin Kravchuk | 6 | 6 | ||||||||||
| Liam Broady | 2 | 4 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Berankis | 6 | 6 | ||||||||||||||||||||||||
| L Saville | 2 | 3 | 1 | R Berankis | 7 | 6 | |||||||||||||||||||||
| B Mitchell | 6 | 77 | B Mitchell | 5 | 4 | ||||||||||||||||||||||
| WC |  C-h Yi | 2 | 63 | 1 | R Berankis | 6 | 7 | ||||||||||||||||||||
| J Jung | 6 | 6 | 5 | S Stakhovsky | 4 | 5 | |||||||||||||||||||||
| T-h Yang | 4 | 1 | J Jung | 2 | 3 | ||||||||||||||||||||||
 M Przysiężny | 79 | 5 | 1 | 5 | S Stakhovsky | 6 | 6 | ||||||||||||||||||||
| 5 | S Stakhovsky | 67 | 7 | 6 | 1 | R Berankis | 3 | 65 | |||||||||||||||||||
| 4 | Y Sugita | 2 | 77 | 1 | 6 | D Evans | 6 | 77 | |||||||||||||||||||
| A Kudryavtsev | 6 | 64 | 6 | A Kudryavtsev | 64 | 1 | |||||||||||||||||||||
| Q | M Matosevic | 6 | 6 | Q | M Matosevic | 77 | 6 | ||||||||||||||||||||
| WC | T-l Wu | 3 | 1 | Q | M Matosevic | 3 | 5 | ||||||||||||||||||||
| T Chen | 4 | 2 | 6 | D Evans | 6 | 7 | |||||||||||||||||||||
| J Wang | 6 | 6 | J Wang | 4 | 3 | ||||||||||||||||||||||
| Q | D Kelly | 1 | 65 | 6 | D Evans | 6 | 6 | ||||||||||||||||||||
| 6 | D Evans | 6 | 77 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | K Kravchuk | 78 | 6 | ||||||||||||||||||||||||
| M Barton | 66 | 3 | 8 | K Kravchuk | 6 | 62 | 6 | ||||||||||||||||||||
| L-c Huang | 2 | 2 |  D Nguyen | 3 | 77 | 4 | |||||||||||||||||||||
| D Nguyen | 6 | 6 | 8 | K Kravchuk | 3 | 6 | 6 | ||||||||||||||||||||
 M Chiudinelli | 6 | 6 | 3 | T Ito | 6 | 1 | 2 | ||||||||||||||||||||
 D Wu | 1 | 1 | M Chiudinelli | 2 | 3 | ||||||||||||||||||||||
| WC | C-y Yu | 4 | 4 | 3 | T Ito | 6 | 6 | ||||||||||||||||||||
| 3 | T Ito | 6 | 6 | 8 | K Kravchuk | 6 | 6 | ||||||||||||||||||||
| 7 | G Soeda | 64 | 5 | L Broady | 2 | 4 | |||||||||||||||||||||
 A Weintraub | 77 | 7 | A Weintraub | 6 | 3 | 77 | |||||||||||||||||||||
| Q | Shuichi Sekiguchi | 66 | 66 |  F Nielsen | 3 | 6 | 62 | ||||||||||||||||||||
| F Nielsen | 78 | 78 | A Weintraub | 5 | 3 | ||||||||||||||||||||||
| WC | J-c Hung | 4 | 0 | L Broady | 7 | 6 | |||||||||||||||||||||
| L Broady | 6 | 6 | L Broady | 6 | 6 | ||||||||||||||||||||||
| Q | Yuya Kibi | 1 | 77 | 6 | Q | Y Kibi | 2 | 4 | |||||||||||||||||||
| 2 | S Groth | 6 | 62 | 4 | |||||||||||||||||||||||
Pavel Šnobel was the defender of title; however, he lost to Evgeny Kirillov in the first round.
Lukáš Lacko became the new champion, after he beat Samuel Groth in the final.
Andrey Golubev was the defending champion but decided not to participate this year.
First-seeded Igor Kunitsyn defeated second-seeded compatriot Konstantin Kravchuk 4–6, 7–6(5), 7–6(3) in the final.
Philipp Kohlschreiber was the defending champion but lost to Tommy Haas in the semifinals.
Eventually, Haas won the title after defeating Roger Federer in the final by 7–6(7–5), 6–4.
David Ferrer was the defending champion, but lost in the first round to Xavier Malisse.
Qualifier Nicolas Mahut won the first title of his career, beating Stanislas Wawrinka in the final, 6–3, 6–4.
Martin Kližan was the defending champion, but withdrew before the tournament began.
Ernests Gulbis won the title, defeating Guillermo García-López in the final, 3–6, 6–4, 6–0.
This was the first edition of the tournament.
Marsel İlhan was the defending champion, but he lost in quarterfinals to Konstantin Kravchuk.
Gilles Müller was the defending champion, but he did not participate this year. He played in Estoril instead.
The Keio Challenger is a professional tennis tournament played on hardcourts. It is currently part of the ATP Challenger Tour and the ITF Women's Circuit. Having been held in Yokohama, Japan since 1999. In 2015, Taro Daniel won the men's singles title, defeating Go Soeda in the final 4–6, 6–3, 6–3.
Simone Bolelli and Fabio Fognini were the defending champions, but lost in the second round to Adrian Mannarino and Lucas Pouille.
This was the first edition of the tournament.
Konstantin Kravchuk won the singles title at the 2016 Busan Open tennis tournament after defeating Daniel Evans 6–4, 6–4 in the final.
Go Soeda was the defending champion, but chose not to defend his title.
Nicolas Mahut was the defending champion and successfully defended his title, defeating Gilles Müller in the final, 6–4, 6–4.
Sam Groth was the defending champion, but lost in the quarterfinals to Denis Kudla.
Teymuraz Gabashvili was the defending champion, but decided not to defend his title.
Mikhail Kukushkin was the defending champion, but chose not to defend his title.
Denis Istomin was the defending champion but lost in the final to Konstantin Kravchuk.
Sam Querrey defeated Rafael Nadal in the final, 6–3, 7–6(7–3) to win the men's singles tennis title at the 2017 Mexican Open.
Dan Evans was the defending champion but chose not to defend his title.