Let's make this birthday one to remember.

42 years old (Born on September 28, 1982)

Happy Birthday, Marin Čilić! May your celebrations serve up more joy than your epic 2014 US Open final victory over Kei Nishikori. Who can forget that powerful performance when you aced your way into history and clinched the championship with incredible skill?

Since turning pro in 2005, you've continued to rise like a perfectly timed lob—reaching World No. 9 in singles on February 22, 2010—and reminding us all what determination and unwavering passion look like on the court. Here's hoping this birthday brings as much excitement as match point in a Grand Slam final—but thankfully less nervous sweating!