ITF M15 Akishima 06/13 01:00 26 Kosuke Okagaki v Sho Katayama 3-6,3-6
ITF M15 Akishima 06/12 02:35 25 Kosuke Okagaki v Tamaki Yamao 6-3,6-1
ITF M15 Akishima 06/11 05:00 54 Shunrou Takeshima v Kosuke Okagaki 2-6,2-6
ITF M15 Akishima 06/11 00:00 54 Kosuke Okagaki v Sam Ryan Ziegann 6-1,6-0
ITF M15 Antalya 04/01 07:00 54 Dan Alexandru Tomescu v Kosuke Okagaki 6-3,6-4
ITF M15 Antalya 03/26 07:00 25 Kosuke Okagaki v Wilson Leite 5-7,7-5,2-6
ITF M15 Antalya 03/11 07:15 45 Kosuke Okagaki v Louroi Martinez 3-6,6-2,5-10
ITF M15 Antalya 02/25 14:45 45 Mircea-Alexandru Jecan v Kosuke Okagaki 6-4,6-0
ITF M15 Antalya 02/25 07:00 45 Kosuke Okagaki v Moritz Thiem 3-6,7-6,10-3
ITF Japan F1 03/03 01:00 62 Kosuke Okagaki v Naoto Kai 6-4,0-6,2-6
ITF Spain F31 09/25 09:00 25 Kosuke Okagaki v Alberto C Sanchez 1-6,2-6