Murray was born with a bipartite patella, a condition in which the kneecap remains as two separate bones instead of fusing together in early childhood. It was not diagnosed until he was aged 16. He has been seen holding his knee due to the pain caused by the condition and has withdrawn from tournaments because of it.

The couple, who are parents to four children - Sophia, eight, Edie, six, Teddy, four, and three year old Lola - had a brief split in 2009, during which Kim famously 'won custody' of their beloved dog Maggie.

In addition to his Grand Slam titles, Andy Murray also holds the title of dad. The tennis star shares three daughters, Sophia, Edie and a third daughter whose name has not been confirmed, and one son, Teddy, with his wife, Kim Murray.

Novak Djokovic targeting Australian Open glory is nothing new - but there will be one major difference this time around as great rival Andy Murray joins his team. The 37-year-old Serb, who is chasing a record 25th Grand Slam singles title, announced the surprise appointment of long-time friend Murray in November.