TENNIS star Andy Murray is a battler by nature.

He has fought to recover from major back surgery and has won three tournaments in the last few weeks, climbing to number six in the world rankings in the process.

There is much more to his character than a doughty fighting spirit, however. Fresh from winning the ATP's Arthur Ashe Humanitarian Award for his charity work (he helped organise last year's Rally Against Cancer at Queen's Club, and was also heavily involved in fundraising following the death of former British number one Elena Baltacha from liver cancer), he has taken up a new challenge, having become a global ambassador for conservation charity WWF.

He is backing the fight to end the illegal wildlife trade that is threatening the survival of species such as tigers and rhinos, and will be supporting an initiative in Nepal that trains dogs to track down poaching activity in the country's Chitwan National Park.

It is to his great credit that a time when he could easily focus all his attention on increasing his tennis earnings, he is willing to devote time and energy to helping efforts to make the world a better place. He is a champion in more ways than one.