SIR Andy Murray has sent a heartfelt message to NHS staff for their heroic work during the coronavirus crisis.

The two-time Wimbledon champ also donated a substantial sum to Addenbrooke’s hospital in Cambridge, where he attended as part of his recovery from is recurrent hip injury. 

In a video message the 32-year-old thanked nurses and doctors for their “dedication and sacrifice” during the COVID-19 pandemic.

He said: “Just want to say a big thanks for all of your hard work, dedication and the sacrifices that you’re making at this time for all of us.

“It’s obviously an extremely difficult time for everyone but none more so than the healthcare workers.

“Everyone there was fantastic and extremely helpful. I have made a donation to the charity to say thank you very much for everything that you’re doing.”

A spokesperson for Addenbrooke’s charitable trust added: “Like Sir Andy, we are in awe of the Addenbrooke’s staff who are working every day to save patients in impossible circumstances.

“We’d like to thank him very much on behalf of our NHS heroes for his kind donation to Addenbrooke’s Charitable Trust.”

The Scots tennis ace also joined forces with wife Kim Sears as the pair showed off their volleying skills in the back garden.

The couple invited sports fans across the globe to take part in their new challenge, which involved them hitting the ball back and forward to each other 100 times.

Murray called on the likes of Roger Federer, Rafael Nadal and Novak Djokovic to have a go at the viral stunt.

He tweeted: “A challenge to all tennis players and fans... the 100 volley challenge.

“There was no bickering during the filming of the video, although I think the last volley was aimed at my head.

“I can't be the only one that wants to see Rog and Mirka hitting a few balls together.”