Let's make this birthday one to remember.

43 years old (Born on December 09, 1981)

Happy Birthday, Mardy Fish! May your day be filled with more aces than double faults and fewer awkward net volleys. Your epic run to the quarterfinals at Wimbledon in 2011 still has us cheering—though we're pretty sure you're done chasing tennis balls for now!

From Olympic silver medalist glory in Athens to becoming America's top-ranked player, you've served up countless memorable moments on court. Now that retirement's here, may you enjoy endless relaxation without worrying about line calls or tie-breakers.

Here's hoping this birthday is as legendary as your backhand—and remember: age is just a number...like rankings!