Russian Open 2013 Highlights: Koki Niwa vs Hang Yin

Russian Open 2014 Highlights: Koki Niwa Vs Jun Mizutani (1/2 FINAL)

Russian Open 2014 Highlights: Koki Niwa Vs Paul Drinkhall (FINAL)

Russian Open 2013 Highlights: Koki Niwa vs Zheng Peifeng (1/4 Final)

Russian Open 2014 Highlights: Koki Niwa Vs Liam Pitchford (Round Of 16)

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

2016 China Open Highlights: Zhang Jike vs Koki Niwa (R16)

Czech Open 2014 Highlights: Masataka Morizono Vs Koki Niwa (1/4 Final)

Japan Open 2013 Highlights: Kenta Matsudaira/Koki Niwa vs Alexey Liventsov/M.Paykov (1/4 Final)

2017 India Open Highlights: Dimitrij Ovtcharov vs Koki Niwa (1/2)

Tomokazu H./Koki Niwa vs Patrick F./Ricardo Walther | 2019 ITTF Australian Open Highlights (R16)

Tomokazu Harimoto/Koki Niwa vs Jeoung Youngsik/Lee Sangsu | 2019 ITTF Korea Open Highlights (1/4)

Harmony China Open 2013 Highlights: Ma Long/Xu Xin vs Kenta Matsudaira/Koki Niwa (Final)

Harmony China Open 2013 Highlights: Ma Long vs Koki Niwa (1/2 Final)

Japan Open 2013 Highlights: Koki Niwa vs Patrick Franziska (Round 3)

2017 Austrian Open Highlights: Lin Gaoyuan vs Koki Niwa (1/4)

Japan Open 2013 Highlights: Koki Niwa/Kenta Matsudaira vs Maharu Yoshimura/Ueda Jin (Final)

Japan Open 2013 Highlights: Koki Niwa vs Thomas Keinath (Round 2)

Korea Open 2015 Highlights: JOO Saehyuk vs NIWA Koki (1/2)

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

2016 Swedish Open Highlights: Mattias Karlsson vs Koki Niwa (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)