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)
Lin Gaoyuan vs Koki Niwa | 2020 ITTF German Open Highlights (R16)
Koki Niwa vs Kanak Jha | 2020 ITTF German Open Highlights (R32)
Tomokazu Harimoto vs Koki Niwa | 2019 ITTF Men's World Cup Highlights (1/4)
Lee Sangsu vs Koki Niwa | 2019 ITTF Men's World Cup Highlights (R16)
Koki Niwa vs Tomokazu Harimoto | T2 Diamond Singaopore (QF)