Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019. (Photos: Xinhua)

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain reacts during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain reacts during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria competes during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019. (Xinhua/Gao Jing)

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain reacts during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019. (Xinhua/Han Yan)

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria competes during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria competes during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria competes during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Dominic Thiem of Austria reacts during the men's singles final with Rafael Nadal of Spain at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain reacts during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain competes during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.

Rafael Nadal of Spain reacts during the men's singles final with Dominic Thiem of Austria at French Open tennis tournament 2019 at Roland Garros, in Paris, France on June 9, 2019.