Let's make this birthday one to remember.

55 years old (Born on July 24, 1969)

Happy Birthday, Jim Wolf! You've been calling balls and strikes since 1999—long enough to see rookies become legends. From the excitement of umpiring the star-studded 2010 All-Star Game to handling pressure-packed moments in the thrilling 2011 National League Championship Series, you've always kept your cool—even when managers couldn't!

Here's hoping today you get fewer arguments than usual (though we know you're a pro at dealing with those). May this birthday be as memorable as all those epic calls behind home plate—and may no one question your judgment on cake slices or strike zones today. Enjoy it!