Shirtless ATP players at practice in Australia

China's Sun Tiantian reminded everyone in her blog that Australia has the highest incidence of skin cancer in the world.

So why are these players risk hitting under the hot sun shirtless???

Mario Ancic in Medibank International earlier this week.

Andy Murray during a practice at Melbourne Park.

Marat Safin at Melbourne Park.

Andy Roddick at Melbourne Park.

(Images via Zahirah's flickr page, Yahoo! Sports)