Let's make this birthday one to remember.

44 years old (Born on November 03, 1980)

Happy Birthday, Mackens Semerzier! You're the featherweight legend who shocked the MMA world and earned Sherdog's Upset of the Year honors back in 2009. Your epic submission victory over Wagnney Fabiano still echoes through fight history—proving that underdogs can bite harder than anyone expects!

As you celebrate another year, remember you're not just older; you're wiser, tougher—and probably better at dodging birthday punches too! May your day be filled with laughter and joy as memorable as your greatest moments inside the cage. Here's to more victories ahead (and fewer surprise chokeholds from life). Cheers to you, Mackens!