The sport's authorities have been criticised for a lack of support for Ukrainian players as they have had to compete against Russians despite the ongoing conflict between the two countries and Medvedev "feels sorry" for those from the war-torn nation.

Medvedev, who has reached the semi-finals at Indian Wells, said: "I definitely do feel sorry for all the Ukrainian players and what they go through.

"Of course we have a responsibility (to talk about the issue) and it depends how every person, individual, will do with it. I’ve always said the same, I’m for peace all over the world and that’s all I can say."

The war denied Medvedev the chance to play at Wimbledon last year but he recently expressed hope that he would be able to return to the Grand Slam this summer and test himself on the grass surface.

The world number six said: "I like grass but it’s a very tough surface, it’s a little bit tougher than hard courts, and that’s where I think Novak (Djokovic) is amazing winning so many grass-court tournaments.

"Because you can really just get a guy who is going to serve good this day and you have to win the tie-breaks. Novak managed to win so many times 6-4 6-4 6-4, I actually don’t know how he does it."

Medvedev added: "I want to play on grass, I want to play Wimbledon.

"I don’t know what their decision is going to be. I’m just going to wait for it and hopefully, I can play Wimbledon this year and show some great results."