Koki Niwa vs Daniel Habesohn | 2021 World Table Tennis Championships Finals | MS | R64
Koki Niwa vs Nandor Ecseki | 2021 World Table Tennis Championships Finals | MS | R128
Team match Japan vs South Korea - Olympics 2020
Timo Boll / Patrick Franzisca vs Koki Niwa / Jun Mizutani - TOKYO 2020
Koki Niwa vs Gustavo Tsuboi | WTT Star Contender Doha 2021 | MS | R32 Highlights
Lin Gaoyuan vs Koki Niwa | Bank of Communications 2020 ITTF Finals (R16)
Koki Niwa vs Jang Woojin | 2020 ITTF Men's World Cup Highlights (R16)
Koki Niwa vs Togami Shunsuke | 90th Anniversary - Meiji University Table Tennis Club
Throwback | Ma Long vs Koki Niwa | MT-FINAL | 2016 Rio Olympics
Koki Niwa vs Xu Xin | 2020 ITTF Qatar Open Highlights (R16)