# 2017 Shimadzu All Japan Indoor Tennis Championships – Singles

Yūichi Sugita was the defending champion but lost in the quarterfinals to Lloyd Harris.
Yasutaka Uchiyama won the title after defeating Blaž Kavčič 6–3, 6–4 in the final.

## Seeds

* Yūichi Sugita (quarterfinals)
* Grega Žemlja (semifinals)
* Ruben Bemelmans (second round)
* Zhang Ze (second round)
* Andrew Whittington (first round)
* Blaž Kavčič (final)
* Tatsuma Ito (second round)
* Agustín Velotti (first round)

## Draw
### Key

* Q = Qualifier
* WC = Wild card
* LL = Lucky loser
* Alt = Alternate
* SE = Special exempt
* PR = Protected ranking
* ITF = ITF entry
* JE = Junior exempt
* w/o = Walkover
* r = Retired
* d = Defaulted
* SR = Special ranking

### Finals

| Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
| Q | Lloyd Harris | 4 | 7$^7$ | 6$^5$ | | | | |
| 6 | Blaž Kavčič | 6 | 6$^3$ | 7$^7$ | | | | |
| 6 | Blaž Kavčič | 6 | 6$^3$ | 7$^7$ | 6 | Blaž Kavčič | 3 | 4 |
| | | | | | | Yasutaka Uchiyama | 6 | 6 |
| | Yasutaka Uchiyama | 3 | 6 | 6 | | Yasutaka Uchiyama | 6 | 6 |
| 2 | Grega Žemlja | 6 | 4 | 3 | | | | |

### Top half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 1 | Y Sugita | 7$^7$ | 6 | | | | | | | | | | | | | | | | |
| | L Saville | 6$^4$ | 3 | | 1 | Y Sugita | 6 | 5 | 6 | | | | | | | | | | |
| | H Moriya | 3 | 6 | 4 | PR | C-M Stebe | 4 | 7 | 3 | | | | | | | | | | |
| PR | C-M Stebe | 6 | 2 | 6 | | | | | | 1 | Y Sugita | 6$^2$ | 5 | | | | | | |
| | M Tepavac | 4 | 6 | 1 | | | | | | Q | L Harris | 7$^7$ | 7 | | | | | | |
| Q | L Harris | 6 | 4 | 6 | Q | L Harris | 6 | 6 | | | | | | | | | | | |
| | D Wu | 6 | 6 | | | D Wu | 4 | 4 | | | | | | | | | | | |
| 8 | A Velotti | 3 | 2 | | | | | | | | | | | | Q | L Harris | 4 | 7$^7$ | 6$^5$ |
| 3 | R Bemelmans | 6 | 6 | | | | | | | | | | | | 6 | B Kavčič | 6 | 6$^3$ | 7$^7$ |
| | B Mott | 4 | 4 | | 3 | R Bemelmans | 6 | 4 | 6$^4$ | | | | | | | | | | |
| | J De Loore | 4 | 6 | 6$^9$ | WC | Yo Watanuki | 1 | 6 | 7$^7$ | | | | | | | | | | |
| WC | Yo Watanuki | 6 | 3 | 7$^{11}$ | | | | | | WC | Yo Watanuki | 4 | 6 | 4 | | | | | |
| WC | Toru Horie | 4 | 3 | | | | | | | 6 | B Kavčič | 6 | 2 | 6 | | | | | |
| | B Rola | 6 | 6 | | | B Rola | 6$^4$ | 6 | 6$^5$ | | | | | | | | | | |
| Q | J Wang | 0 | 7$^7$ | 1 | 6 | B Kavčič | 7$^7$ | 2 | 7$^7$ | | | | | | | | | | |
| 6 | B Kavčič | 6 | 6$^2$ | 6 | | | | | | | | | | | | | | | |

### Bottom half

| First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
| 7 | T Ito | 6 | 6 | | | | | | | | | | | | | | | |
| LL | Shuichi Sekiguchi | 2 | 3 | | 7 | T Ito | 6 | 5 | 0$^r$ | | | | | | | | | |
| Q | E Karlovskiy | 3 | 6 | 6 | Q | E Karlovskiy | 3 | 7 | 3 | | | | | | | | | |
| | Yuya Kibi | 6 | 1 | 2 | | | | | | Q | E Karlovskiy | 4 | 4 | | | | | |
| | Y Uchiyama | 6 | 6 | | | | | | | | Y Uchiyama | 6 | 6 | | | | | |
| | M Matosevic | 3 | 3 | | | Y Uchiyama | 7$^7$ | 4 | 6 | | | | | | | | | |
| WC | K Uesugi | 1 | 1 | | 4 | Z Zhang | 6$^5$ | 6 | 3 | | | | | | | | | |
| 4 | Z Zhang | 6 | 6 | | | | | | | | | | | | Y Uchiyama | 3 | 6 | 6 |
| 5 | A Whittington | 4 | 6$^6$ | | | | | | | | | | | 2 | G Žemlja | 6 | 4 | 3 |
| | T Chen | 6 | 7$^8$ | | | T Chen | 6 | 6 | | | | | | | | | | |
| | B Klein | 4 | 7$^7$ | 3 | | F Škugor | 3 | 4 | | | | | | | | | | |
| | F Škugor | 6 | 6$^1$ | 6 | | | | | | | T Chen | 4 | 4 | | | | | |
| Q | S-w Kwon | 6 | 6 | | | | | | | 2 | G Žemlja | 6 | 6 | | | | | |
| WC | Jumpei Yamasaki | 1 | 1 | | Q | S-w Kwon | 3 | 3 | | | | | | | | | | |
| | M Polmans | 5 | 4 | | 2 | G Žemlja | 6 | 6 | | | | | | | | | | |
| 2 | G Žemlja | 7 | 6 | | | | | | | | | | | | | | | |