Challenger Roma DM 04/26 13:40 26 Istomin/Karlovskiy v Durasovic/Romboli 7-6,5-7,2-10
Challenger Maia DM 11/30 14:15 26 Istomin/Karlovskiy v Faria/Vale 4-6,6-7
Challenger Andria DM 11/23 15:55 26 Istomin/Karlovskiy v Haase/Verbeek 3-6,6-3,7-10
Challenger Ortisei DM 10/29 11:50 29 Bortolotti/Martos Gornes v Istomin/Karlovskiy 3-6,5-7
Challenger Ortisei DM 10/28 14:00 28 Istomin/Karlovskiy v Nouza/Paulson 6-3,6-7,11-9
Challenger Ortisei DM 10/27 10:30 27 Istomin/Karlovskiy v Jebavy/Pavlasek 4-6,7-5,10-4
Challenger Ortisei DM 10/26 14:20 26 Istomin/Karlovskiy v Catini/Noce 6-2,7-6
Challenger Ortisei DM 10/26 08:00 26 Istomin/Karlovskiy v Masur/Trungelliti Cancelled
Challenger Nur-Sultan DM 07/20 14:00 26 Istomin/Karlovskiy v Donskoy/Kachmazov 3-6,6-4,8-10
Challenger Quimper DM 02/03 09:30 26 Istomin/Karlovskiy v Drzewiecki/Walkow 6-7,5-7
Challenger Winnetka DM 07/14 15:00 28 Istomin/Karlovskiy v Eubanks/Kwiatkowski Walkover
Challenger Winnetka DM 07/12 00:00 27 Fratangelo/Krueger v Istomin/Karlovskiy Walkover
Challenger Winnetka DM 07/09 21:00 26 Istomin/Karlovskiy v Maytin/Withrow 6-1,4-6,10-2