2016 World Championships Highlights: Koki Niwa vs Kiryl Barabanov

2018 World Team Championships Highlights | Koki Niwa vs Pavel Platonov (Group)

2018 World Team Championships Highlights | Koki Niwa vs Lam Siu Hang (R16)

Koki Niwa vs Jakub Dyjas | 2019 World Championships Highlights (R32)

Xu Xin vs Koki Niwa Highlights Asian Championships 2017

2016 World Championships Highlights: Koki Niwa vs Pang Xue Jie

2017 World Championships Highlights I Kristian Karlsson/M.Karlsson vs Koki Niwa/Maharu Y. (Round 3)

Koki Niwa vs Marcelo Aguirre | 2019 World Championships Highlights (R128)

2017 World Championships Highlights I Dimitrij Ovtcharov vs Koki Niwa (R16)

2017 World Championships | Highlights Fan Zhendong vs Koki Niwa (1/4)

2016 World Championships Highlights: Koki Niwa vs Yang Zi

2016 World Championships Highlights: Koki Niwa vs Marcos Freitas

2018 World Team Championships Highlights | Koki Niwa vs Cedric Nuytinck (Group)

2017 World Championships Highlights I Xu Xin/Fan Zhendong vs Koki Niwa/M.Yoshimura (1/2)

Koki Niwa vs Pucar Tomislav | 2019 World Championships Highlights (R16)

2016 World Championships Highlights: Koki Niwa vs Tang Peng

2017 Asian Championships MW QF NIWA Koki YOSHIMURA Maharu CHEN Chien An LIAO Cheng Ting(TP

Koki Niwa Training | Liebherr 2019 World Table Tennis Championships

2017 Asian Championships MS QF NIWA Koki XU Xin(CHN)

2017 Asian Championships MW QF NIWA Koki YOSHIMURA Maharu CHEN Chien An LIAO Cheng Ting(TP

German Open 2016 Highlights: MA Long vs NIWA Koki (R16)

DHS ITTF Top 10 - 2018 Japan Open

DHS ITTF Top 10 - 2018 China Open

Zhang Jike vs Tomokazu Harimoto | 2018 Japan Open Highlights (Final)

Ito Mima vs Wang Manyu | 2018 Japan Open Highlights (Final)

Jeoung Youngsik/Lee Sangsu vs Liang Jingkun/Zhou Kai | 2018 Japan Open Highlights (Final)

Chen Xingtong vs Ito Mima | 2018 Japan Open Highlights (1/2)