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Shuichi Sekiguchi vs. Marc Polmans - H2H matches
| 31.10.19 | 3rd round | Marc Polmans | Shuichi Sekiguchi | 6-3, 6-4 | match details |  Playford Challenger | Hard |
| 05.03.17 | q 2 | Shuichi Sekiguchi | Marc Polmans | 6-2, 6-4 | match details |  Zhuhai Challenger | Hard |
| 02.11.16 | 2nd round | Marc Polmans | Shuichi Sekiguchi | 6-1, 6-2 | match details | Canberra Challenger | Hard |
Shuichi Sekiguchi form & Marc Polmans form
Shuichi Sekiguchi - last matches
| M25 Cairns - Hard | ||||
| 12.10.23 2nd round | vs. Kokoro Isomura | 4-6, 6-4, 3-6 |  | match details |
| 10.10.23 1st round | vs. Tomislav Edward Papac | 6-4, 6-3 |  | match details |
 M25 Sapporo - Hard | ||||
| 16.09.23 1/4 | vs. Hikaru Shiraishi | 6-2, 4-6, 6-3 | | match details |
| 16.09.23 1/2 | vs. Kazuki Nishiwaki | 6-0, 5-7, 4-6 | | match details |
| 15.09.23 2nd round | vs. Jumpei Yamasaki | 6-3, 7-5 | | match details |
| 13.09.23 1st round | vs. Ryota Tanuma | 7-62, 6-1 | | match details |
| M25 Sapporo - Hard | ||||
| 10.09.23 fin | vs. Daisuke Sumizawa | 6-1, 6-4 | | match details |
| 09.09.23 1/2 | vs. Naoki Nakagawa | 5-7, 6-3, 7-5 | | match details |
| 08.09.23 1/4 | vs. Jumpei Yamasaki | 6-4, 6-3 | | match details |
| 07.09.23 2nd round | vs. Chase Ferguson | 6-2, 6-2 | | match details |
| 05.09.23 1st round | vs. Hiroki Sakagawa | 6-3, 6-2 | | match details |
| Zhangjiagang Challenger - Hard | ||||
| 28.08.23 qual. | vs. Jie Cui | 1-6, 2-6 | | match details |
| 27.08.23 q 1 | vs. Francis Casey Alcantara | 7-5, 6-3 | | match details |
| Zhuhai Challenger - Hard | ||||
| 22.08.23 1st round | vs. Dominik Palan | 6-70, 7-5, 2-6 | | match details |
| 21.08.23 qual. | vs. Markos Kalovelonis | 7-61, 2-6, 6-4 | | match details |
 M25 Astana - Hard | ||||
| 05.08.23 1/2 | vs. Yusuke Takahashi | 4-6, 4-6 | | match details |
| 04.08.23 1/4 | vs. Egor Agafonov | 7-61, 6-1 | | match details |
| 03.08.23 2nd round | vs. S D Prajwal Dev | 6-75, 7-5, 6-0 | | match details |
| 02.08.23 1st round | vs. Ajeet Rai | 6-2, 6-1 | | match details |
| Astana Challenger - Hard | ||||
| 24.07.23 1st round | vs. Khumoun Sultanov | 6-75, 4-6 | | match details |
 M15 Nakhon - Hard | ||||
| 07.07.23 1/4 | vs. Maximus Jones | 4-6, 7-63, 5-7 | | match details |
| 06.07.23 2nd round | vs. Taisei Ichikawa | 6-2, 6-2 | | match details |
| 05.07.23 1st round | vs. Credit Chaiyarin | 6-2, 6-4 | | match details |
 M15 Jakarta - Hard | ||||
| 28.06.23 1st round | vs. Moerani Bouzige | 5-7, 3-6 | | match details |
| M15 Jakarta - Hard | ||||
| 23.06.23 1/4 | vs. Fitriadi M Rifqi | 6-0, 3-6, 6-75 | | match details |
| 22.06.23 2nd round | vs. Thiemo de Bakker | 1-6, 6-1, 3-1, Thiemo de Bakker - retired | | match details |
| 21.06.23 1st round | vs. Tegar Abdi Satrio Wibowo | 6-0, 6-0 | | match details |
| M25 Kashiwa - Hard | ||||
| 06.04.23 2nd round | vs. Jea Moon Lee | - | | match details |
| 05.04.23 1st round | vs. Tatsuma Ito | 4-6, 6-3, 7-5 | | match details |
 M25 Lucknow - Hard | ||||
| 22.03.23 1st round | vs. Karan Singh | 3-6, 4-6 | | match details |
Marc Polmans - last matches
 M15 Heraklion - Hard | ||||
| 23.05.25 1/4 | vs. Edward Winter | 4-6, 1-6 | | match details |
| 22.05.25 2nd round | vs. Ryuki Matsuda | 6-3, 4-6, 6-2 | | match details |
| 21.05.25 1st round | vs. Andreas Loizas | 6-3, 6-0 | | match details |
 Savannah Challenger - Clay | ||||
| 21.04.25 qual. | vs. Tristan Mccormick | 5-7, 2-6 | | match details |
| 20.04.25 q 1 | vs. James Tracy | 6-3, 6-4 | | match details |
| Tallahassee Challenger - Clay | ||||
| 14.04.25 qual. | vs. Karl Poling | 4-6, 6-3, 2-6 | | match details |
| 13.04.25 q 1 | vs. Benjamin Willwerth | 7-65, 6-4 | | match details |
| Sarasota Challenger - Clay | ||||
| 06.04.25 q 1 | vs. Blaise Bicknell | 5-7, 2-6 | | match details |
| M25 Swan - Grass | ||||
| 21.03.25 2nd round | vs. Thomas Braithwaite | 7-64, 5-7, 4-6 | | match details |
| 19.03.25 1st round | vs. Jack Bruce-Smith | 6-4, 6-3 | | match details |
| Melbourne - Hard | ||||
| 07.01.25 q 1 | vs. Valentin Royer | 3-6, 0-6 | | match details |
| Kobe Challenger - I. hard | ||||
| 12.11.24 1st round | vs. Yosuke Watanuki | 5-7, - Marc Polmans - retired | | match details |
| Sydney Challenger - Hard | ||||
| 30.10.24 2nd round | vs. Hikaru Shiraishi | 6-3, 1-6, 2-6 | | match details |
| 29.10.24 1st round | vs. Edward Winter | 6-2, 6-2 | | match details |
| Playford Challenger - Hard | ||||
| 26.10.24 1/2 | vs. Yuta Shimizu | 0-6, 3-6 | | match details |
| 25.10.24 1/4 | vs. Shintaro Mochizuki | 2-6, 6-4, 6-4 | | match details |
| 23.10.24 2nd round | vs. Shintaro Imai | 7-67, 3-6, 6-2 | | match details |
| 22.10.24 1st round | vs. Zura Tkemaladze | 2-6, 6-4, 6-4 | | match details |
| M25 Cairns - Hard | ||||
| 13.10.24 fin | vs. Omar Jasika | 3-6, 4-6 | | match details |
| 12.10.24 1/2 | vs. Blake Ellis | 6-4, 2-6, 7-65 | | match details |
| 11.10.24 1/4 | vs. Moerani Bouzige | 6-3, 6-2 | | match details |
| 10.10.24 2nd round | vs. Corey Gaal | 6-2, 3-2, Corey Gaal - retired | | match details |
| 08.10.24 1st round | vs. Hugh Winter | 6-2, 7-66 | | match details |
| Chengdu - Hard | ||||
| 17.09.24 q 1 | vs. Terence Atmane | 4-6, 7-64, 4-6 | | match details |
| Guangzhou Challenger - Hard | ||||
| 13.09.24 1/4 | vs. Luca Nardi | 4-6, 3-6 | | match details |
| 11.09.24 2nd round | vs. Paul Jubb | 6-3, 6-1 | | match details |
| 09.09.24 1st round | vs. Vadym Ursu | 7-5, 6-1 | | match details |
| Shanghai Challenger - Hard | ||||
| 05.09.24 2nd round | vs. Norbert Gombos | 4-6, 2-6 | | match details |
| 03.09.24 1st round | vs. Bu Yunchaokete | 6-3, 3-6, 6-3 | | match details |
| New York - Hard | ||||
| 21.08.24 q 2 | vs. Aslan Karatsev | 0-6, 3-6 | | match details |
