Dallas, Singles Main, M-ITF-USA-18A 06/30 16:30 26 Sekiguchi, Shuichi v Yibing Wu Retired
Dallas, Singles Main, M-ITF-USA-18A 06/29 16:05 25 Marcus Walters v Sekiguchi, Shuichi 3-6,2-6
ITF M15 South Bend 06/23 15:35 26 Sekiguchi, Shuichi v Shane, Ryan 3-6,2-6
ITF M15 South Bend 06/22 21:20 25 Sekiguchi, Shuichi v Aditya Vashistha 7-5,6-2
ITF M25 Wichita 06/15 14:55 25 Yuta Shimizu v Sekiguchi, Shuichi 3-6,6-3,6-2
ITF - M15 Héraklion 05/29 07:00 29 Sekiguchi, Shuichi v Ivanov, Simon Anthony 6-3,6-1
ITF - M15 Héraklion 05/28 07:00 28 Sekiguchi, Shuichi v Mark Whitehouse 6-4,6-2
ITF - M15 Héraklion 05/27 07:30 27 Sekiguchi, Shuichi v Stefanos Sakellaridis 7-6,6-1
ITF - M15 Héraklion 05/26 07:00 26 Sekiguchi, Shuichi v Marlon Vankan Retired
ITF - M15 Héraklion 05/25 07:00 25 Sekiguchi, Shuichi v Gabriele Bosio 3-6,6-4,6-0
ITF - M15 Héraklion 05/21 10:20 28 Sekiguchi, Shuichi v Omar Jasika 4-6,2-6
ITF - M15 Héraklion 05/20 07:00 27 Pontico, Hugo v Sekiguchi, Shuichi 1-6,0-6
ITF - M15 Héraklion 05/19 06:55 26 Kelsey Stevenson v Sekiguchi, Shuichi 0-6,3-6
ITF - M15 Héraklion 05/18 07:00 25 Dimic, Matic v Sekiguchi, Shuichi 0-6,0-6
ITF - M15 Héraklion 05/13 07:00 27 Sekiguchi, Shuichi v Colin Markes 3-6,6-3,3-6
ITF - M15 Héraklion 05/12 11:05 26 Sekiguchi, Shuichi v Sebastian Dominko 7-6,6-1
ITF - M15 Héraklion 05/10 08:30 25 Sekiguchi, Shuichi v Matthew Dellavedova 6-4,6-2
ITF - M15 Sharm El Sheikh 04/01 08:00 27 Boehler, Dominik v Sekiguchi, Shuichi 4-6,6-4,7-5
ITF - M15 Sharm El Sheikh 03/31 10:15 26 Karlo Cubelic v Sekiguchi, Shuichi 4-6,6-7
ITF - M15 Sharm El Sheikh 03/30 10:15 25 Simon, Sahar v Sekiguchi, Shuichi 6-7,1-6
ITF - M25 Quinta Do Lago 03/25 10:00 25 Soriano Barrera, Adria v Sekiguchi, Shuichi 5-7,6-4,10-5
ITF - M25 Loulé 03/17 13:00 25 [421] Hady Habib v Sekiguchi, Shuichi [466] 6-0,6-4
ITF M25 Decatur 08/04 18:05 25 Perez, Alfredo v Sekiguchi, Shuichi 6-1,7-6
Challenger Lexington 07/26 19:25 25 [249] Ulises Blanch v Sekiguchi, Shuichi [350] 6-3,6-4
Challenger Cary 07/19 21:00 25 [284] Harrison, Christian v Sekiguchi, Shuichi [345] 6-4,6-4
Challenger Salinas 2 04/27 18:40 25 [316] Sekiguchi, Shuichi v Pedro Sakamoto [313] 2-6,4-6
Challenger Salinas 04/21 15:00 26 Sekiguchi, Shuichi v Nicolas Jarry 1-6,2-6
Challenger Salinas 04/19 16:00 25 [265] Hiroki Moriya v Sekiguchi, Shuichi [318] 1-6,6-7
Orlando, USA 04/12 15:30 14 [252] Altug Celikbilek v Sekiguchi, Shuichi [307] 4-6,6-4,7-5
Challenger - Cleveland 03/16 18:40 25 Alexis Galarneau v Sekiguchi, Shuichi 6-3,6-1