Tough going for French tennis players returning to training
French veteran Nicolas Mahut wearing protective gloves gets the balls from courtside trainer Nicolas Copin at a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

French veteran Nicolas Mahut wearing protective gloves gets the balls from courtside trainer Nicolas Copin at a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:21 PM EDT
French veteran Nicolas Mahut cleans the net during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

French veteran Nicolas Mahut cleans the net during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:15 PM EDT
The tennis ball of french veteran Nicolas Mahut is marked with a sign during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

The tennis ball of french veteran Nicolas Mahut is marked with a sign during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:17 PM EDT
The tennis bench of french veteran Nicolas Mahut is sticked with white and red ribbon during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

The tennis bench of french veteran Nicolas Mahut is sticked with white and red ribbon during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:50 PM EDT
French tennis player Gregoire Barrere, right, and courtside trainer Marc Gicquel, left, attend a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

French tennis player Gregoire Barrere, right, and courtside trainer Marc Gicquel, left, attend a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:40 PM EDT
French Tennis Federation Doctor Bernard Montalvan talks with Tennis Federation head of communication Nathalie Ricard Deffontaine during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

French Tennis Federation Doctor Bernard Montalvan talks with Tennis Federation head of communication Nathalie Ricard Deffontaine during a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:44 PM EDT
French veteran Nicolas Mahut, wearing protective gloves, participates at a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

French veteran Nicolas Mahut, wearing protective gloves, participates at a training session in the French Tennis Federation center near the grounds of the French Open in Paris, Wednesday, May 13, 2020 under the watchful eye of a team doctor and courtside trainers. Professional tennis players resumed training in France after the end of lockdown amid the coronavirus pandemic. (AP Photo/Francois Mori)

May. 13, 2020 01:15 PM EDT