2018 Rakuten Japan Open Tennis Championships – Doubles
and Yasutaka Uchiyama were the defending champions but chose not to participate together. McLachlan played alongside Jan-Lennard Struff and successfully defended the title, defeating Raven Klaasen and Michael Venus in the final, 6–4, 7–5. Uchiyama teamed up with Joe Salisbury, but lost in the semifinals to Klaasen and Venus.Seeds
Draw
Draw
Seeds
Qualifiers
- Fabrice Martin / Gilles Simon
Qualifying draw