2018 Busan Open – Doubles
Hsieh Cheng-peng and Peng Hsien-yin were the defending champions but chose to defend their title with different partners. Hsieh partnered Christopher Rungkat and successfully defended his title. Peng partnered Aliaksandr Bury but lost in the semifinals to Hsieh and Rungkat.
| Doubles | |
|---|---|
| 2018 Busan Open | |
| Champions |  Hsieh Cheng-peng  Christopher Rungkat | 
| Runners-up |  Ruan Roelofse .svg.png.webp) John-Patrick Smith | 
| Final score | 6–4, 6–3 | 
Hsieh and Rungkat won the title after defeating Ruan Roelofse and John-Patrick Smith 6–4, 6–3 in the final.
Seeds
    
 Ruan Roelofse / Ruan Roelofse /.svg.png.webp) John-Patrick Smith (final) John-Patrick Smith (final)
 Aliaksandr Bury / Aliaksandr Bury / Peng Hsien-yin (semifinals) Peng Hsien-yin (semifinals)
 Sanchai Ratiwatana / Sanchai Ratiwatana / Sonchat Ratiwatana (semifinals) Sonchat Ratiwatana (semifinals)
 Hsieh Cheng-peng / Hsieh Cheng-peng / Christopher Rungkat (champions) Christopher Rungkat (champions)
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
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 |  R Roelofse .svg.png.webp) J-P Smith | 6 | 6 | ||||||||||||||||||||||||
| WC |  Kim Yu-seob  Lim Hyung-chan | 4 | 4 | 1 |  R Roelofse .svg.png.webp) J-P Smith | 3 | 6 | [16] | |||||||||||||||||||
|  Z Li  D Wu | 5 | 6 | [13] |  M Gong  Ze Zhang | 6 | 1 | [14] | ||||||||||||||||||||
|  M Gong  Ze Zhang | 7 | 4 | [15] | 1 |  R Roelofse .svg.png.webp) J-P Smith | 6 | 6 | ||||||||||||||||||||
| 3 |  Sa Ratiwatana  So Ratiwatana | 6 | 6 | 3 |  Sa Ratiwatana  So Ratiwatana | 4 | 4 | ||||||||||||||||||||
|  T Matsui  R Statham | 1 | 2 | 3 |  Sa Ratiwatana  So Ratiwatana | 6 | 6 | |||||||||||||||||||||
|  Y Takahashi  K Uchida | 3 | 6 | [8] |  R Gonzales .svg.png.webp) B Schnur | 2 | 4 | |||||||||||||||||||||
|  R Gonzales .svg.png.webp) B Schnur | 6 | 3 | [10] | 1 |  R Roelofse .svg.png.webp) J-P Smith | 4 | 3 | ||||||||||||||||||||
|  M McDonald .svg.png.webp) F Peliwo | 0 | 6 | [13] | 4 |  C-p Hsieh  C Rungkat | 6 | 6 | ||||||||||||||||||||
| Q | .svg.png.webp) M Banes .svg.png.webp) B Ellis | 6 | 4 | [15] | Q | .svg.png.webp) M Banes .svg.png.webp) B Ellis | 4 | 3 | |||||||||||||||||||
| WC |  Ho Chung  J-m Lee | 64 | 1 | 4 |  C-p Hsieh  C Rungkat | 6 | 6 | ||||||||||||||||||||
| 4 |  C-p Hsieh  C Rungkat | 77 | 6 | 4 |  C-p Hsieh  C Rungkat | 6 | 4 | [10] | |||||||||||||||||||
| .svg.png.webp) J Kubler .svg.png.webp) M Purcell | 6 | 64 | [10] | 2 |  A Bury  H-y Peng | 4 | 6 | [6] | |||||||||||||||||||
| WC |  Y-s Chung  S-c Hong | 4 | 77 | [8] | .svg.png.webp) J Kubler .svg.png.webp) M Purcell | ||||||||||||||||||||||
|  T Chen  C-h Yi | 6 | 4 | [7] | 2 |  A Bury  H-y Peng | w/o | |||||||||||||||||||||
| 2 |  A Bury  H-y Peng | 3 | 6 | [10] | |||||||||||||||||||||||
References
    
    
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