Coco Gauff of the U.S. celebrates as she won the quarterfinal match of the French Tennis Open against Madison Keys of the U.S. at the Roland-Garros stadium in Paris.

Coco Gauff of the U.S. plays a shot against Madison Keys of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

The roof of the center court Philippe Chatrier is closed due to the rain as Coco Gauff of the U.S. plays a shot against Madison Keys of the U.S. during the quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

The roof of the center court Philippe Chatrier is closed due to the rain during the quarterfinal match of the French Tennis Open between Madison Keys of the U.S., left, and Coco Gauff of the U.S. at the Roland-Garros stadium in Paris.

Coco Gauff of the U.S. plays a shot against Madison Keys of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

Madison Keys of the U.S. walks during the quarterfinal match of the French Tennis Open against Coco Gauff of the U.S. at the Roland-Garros stadium in Paris.

Madison Keys of the U.S. plays a shot against Coco Gauff of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

Madison Keys of the U.S. plays a shot against Coco Gauff of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

Coco Gauff of the U.S. plays a shot against Madison Keys of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.

Coco Gauff of the U.S. plays a shot against Madison Keys of the U.S. during their quarterfinal match of the French Tennis Open at the Roland-Garros stadium in Paris.