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

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

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

2017 아시아탁구선수권 정상은vs니와코키 준결승 Asian Championships SF Jeong sang eun VS Niwa koki

JEONG Sangeun vs NIWA Koki 1/2 FULL MATCH HD Asian Championships 2017

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

XU XIN vs JANG Woojin FULL MATCH HD Asian Championships 2017

2016 Qatar Open Highlights: Ma Long/Xu Xin vs Koki Niwa/Maharu Yoshimura (R1)

2016 Japan Open Highlights: Ma Long/Xu Xin vs Koki Niwa/Maharu Yoshimura (1/4)

2016 World Championships Highlights: Koki Niwa vs Marcos Freitas

2016 World Championships Highlights: Koki Niwa vs Yang Zi

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

Koki Niwa Training | Liebherr 2019 World Table Tennis Championships

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)

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

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

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

Tomokazu Harimoto vs Koki Niwa I 2018 Asian Cup

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