Challenger Tallahassee 04/14 14:00 45 Rei Sakamoto v Alex Rybakov 6-4,3-6,0-6
ATP Miami 03/18 15:00 14 Rei Sakamoto v Vit Kopriva 6-7,6-7
ITF M25 Bakersfield 03/12 21:00 25 Rei Sakamoto v Elijah Strode 6-4,1-6,2-6
ITF M15 Sharm El Sheikh 02/16 08:00 27 Rei Sakamoto v Marek Gengel 1-6,5-7
ITF M15 Sharm El Sheikh 02/15 10:30 26 Antoine Ghibaudo v Rei Sakamoto 4-6,0-6
ITF M15 Sharm El Sheikh 02/14 10:35 25 Rei Sakamoto v Aliaksandr Liaonenka 6-4,6-4
ITF M15 Sharm El Sheikh 02/08 08:00 26 Rei Sakamoto v Federico Bondioli Retired
ITF M15 Sharm El Sheikh 02/07 11:00 25 Luca Giacomini v Rei Sakamoto 4-6,3-6
Challenger Yokkaichi 11/29 01:30 26 Chak L C Wong v Rei Sakamoto 6-3,6-2
Challenger Yokkaichi 11/28 01:00 25 Rei Sakamoto v Jurij Rodionov 6-4,6-4
Challenger Yokohama 11/21 04:40 25 Rei Sakamoto v Li Tu 4-6,3-6
Challenger Kobe 11/12 02:40 14 Yasutaka Uchiyama v Rei Sakamoto 6-1,6-2
ITF M15 Tallahassee 10/26 17:45 26 Rei Sakamoto v Etienne Donnet 2-6,2-6
ITF M15 Tallahassee 10/25 20:10 25 Rei Sakamoto v Mwendwa Mbithi 6-3,6-2
ITF M15 Albuquerque 09/27 21:30 25 Rei Sakamoto v Adam Neff 4-6,2-6
ITF M15 Orange Park 05/04 14:15 26 Colin Markes v Rei Sakamoto 5-7,6-4,6-2
ITF M15 Orange Park 05/03 14:50 25 Rei Sakamoto v Bruno Kuzuhara 7-6,4-6,6-3
ITF M15 Antalya 04/05 11:40 25 Rei Sakamoto v Dominik Kellovsky 5-7,0-6
ITF M15 Antalya 03/30 08:00 26 Rei Sakamoto v Sidane Pontjodikromo 7-5,4-6,1-6
ITF M15 Antalya 03/29 11:10 25 Bruno Kuzuhara v Rei Sakamoto 6-4,3-6,4-6
ITF M15 Naples 02/24 15:00 27 Rei Sakamoto v Gabi Adrian Boitan 3-6,2-6
ITF M15 Naples 02/23 15:00 26 Alvaro G Meza v Rei Sakamoto 6-4,5-7,3-6
ITF M15 Naples 02/21 16:30 25 Rei Sakamoto v ZhengQing Ji 7-6,7-5
ITF M15 Palm Coast 02/09 18:00 26 Toby Kodat v Rei Sakamoto 6-2,6-3
ITF M15 Palm Coast 02/07 16:30 25 Rei Sakamoto v Kristjan Tamm 7-6,2-6,6-3
ITF M25 Malibu 01/02 17:00 54 Rei Sakamoto v Arthur Neuhaus 1-6,2-6
ITF M15 Antalya 10/26 11:25 25 Dan Alexandru Tomescu v Rei Sakamoto 4-6,6-4,6-2
ITF M15 Antalya 10/19 07:00 25 Rei Sakamoto v Savva Polukhin 3-6,2-6
ITF M15 Albuquerque 09/30 20:25 27 Rei Sakamoto v Maciej Rajski 2-6,3-6
ITF M15 Albuquerque 09/29 15:00 26 Yuta Kikuchi v Rei Sakamoto 2-6,2-6