Ana Ivanovic was spotted working on her tennis game a few weeks back in Key Biscayne, Florida. I suspect a good number of our readers might be interested in the photographs of said workout. It's been a tough road for the Serbian tennis star since she achieved the world's top ranking back in early 2008, with various early-round upsets and disappointing grand slam efforts causing her to slide all the way back to the seventh spot. The good news for most male viewers is win or lose Ana still looks very good doing it.