Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019. (Photos: Xinhua/Du Xiaoyi)

Kento Momota of Japan poses during the awarding ceremony after winning the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan reacts during the awarding ceremony after winning the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan celebrates after winning the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Jonatan Christie of Indonesia poses during the awarding ceremony after the men's singles final against Kento Momota of Japan at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan walks into the field of the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota (L) of Japan shakes hands with Jonatan Christie of Indonesia after winning the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan celebrates after winning the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan reacts during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Jonatan Christie of Indonesia walks into the field of the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Jonatan Christie of Indonesia competes during the men's singles final against Kento Momota of Japan at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Jonatan Christie of Indonesia competes during the men's singles final against Kento Momota of Japan at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Jonatan Christie of Indonesia reacts during the men's singles final against Kento Momota of Japan at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.

Kento Momota of Japan competes during the men's singles final against Jonatan Christie of Indonesia at Japan Open 2019 badminton tournament in Tokyo, Japan, on July 28, 2019.