Andy Murray says he will donate £50 for every ace he hits from now until the end of the year to help the cause of refugees.
Murray, who is playing for Britain in this week's Davis Cup semi-finals against Australia in Glasgow, decided on the idea after seeing images of migrants coming to Europe on the news.
His donations will be matched by one of his sponsors, along with the Association of Tennis Professionals and the Lawn Tennis Association, making each ace worth £200.