| 10.09.18 | 1/4 | Francesco Ferrari/Michail Pervolarakis | Hiroyasu Ehara/Sho Katayama | 6-4, 6-73, 10-8 |  | match details | Canada F7 | Difícil |
| 10.09.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Kooros Ghasemi/Sebastian Zapata Ramirez | 6-1, 6-4 |  | match details |
| 03.09.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Nick Chappell/Felix Corwin | 6-75, 6-4, 10-5 |  | match details | Canada F6 | I. difícil |
| 03.09.18 | 1/2 | Charlie Emhardt/Samuel Shropshire | Hiroyasu Ehara/Sho Katayama | 4-6, 6-4, 10-6 |  | match details |
| 03.09.18 | 1/4 | Hiroyasu Ehara/Sho Katayama | Julian Bradley/Jack Findel-Hawkins | 7-5, 6-4 |  | match details |
| 18.06.18 | 1/2 | Hiroyasu Ehara/Sho Katayama | Yuta Shimizu/Kento Takeuchi | 4-6, 7-5, 10-6 |  | match details | Guam F1 | Difícil |
| 18.06.18 | fin | Hiroyasu Ehara/Sho Katayama | Jake Delaney/Thomas Fancutt | 6-3, 6-3 |  | match details |
| 18.06.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Manu Bajpai/Hank Hill | 6-2, 6-1 |  | match details |
| 18.06.18 | 1/4 | Hiroyasu Ehara/Sho Katayama | Alec Adamson/Alex Hunt | 6-0, 6-3 |  | match details |
| 04.06.18 | 1er ronda | Ang Ji/Bingyu Yu | Hiroyasu Ehara/Sho Katayama | 6-3, 5-7, 10-4 |  | match details | China F8 | Difícil |
| 09.04.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Yuuya Kibi/Arata Onozawa | 6-3, 6-2 |  | match details | Japan F6 | Difícil |
| 09.04.18 | 1/4 | Yuhei Kono/Yuto Sakai | Hiroyasu Ehara/Sho Katayama | 7-63, 6-4 |  | match details |
| 02.04.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Yu Hsiang Chiu/Jacob Grills | 6-4, 6-0 |  | match details | Japan F5 | Difícil |
| 02.04.18 | 1/4 | Shinta Fujii/Makoto Ochi | Hiroyasu Ehara/Sho Katayama | 2-6, 6-3, 10-6 |  | match details |
| 19.03.18 | 1/2 | Hiroyasu Ehara/Sho Katayama | Gengo Kikuchi/Shunrou Takeshima | 7-61, 7-5 |  | match details | Japan F3 | Difícil |
| 19.03.18 | fin | Hiroyasu Ehara/Sho Katayama | Jae-Min Seol/Min-Kyu Song | 7-5, 7-65 |  | match details |
| 19.03.18 | 1er ronda | Hiroyasu Ehara/Sho Katayama | Yasunori Hashikawa/Hiromasa Oku | 6-4, 6-3 |  | match details |
| 19.03.18 | 1/4 | Hiroyasu Ehara/Sho Katayama | Tae-Woo Lee/Yong-Kyu Lim | 7-65, 6-3 |  | match details |
| 12.03.18 | 1er ronda | Tae-Woo Lee/Yong-Kyu Lim | Hiroyasu Ehara/Sho Katayama | 7-63, 3-6, 10-8 |  | match details | Japan F2 | Difícil |