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About UpLVL

UpLVL exists to fix the
feedback gap in youth sports.

We make development visible for players and parents, while giving coaches a way to capture and deliver meaningful feedback in seconds.

Joni and Michael Kazantzis have kids in travel sports. A few years ago, they started noticing something: their kids were improving, but meaningful feedback from coaches was almost nonexistent. They asked other parents. Same story, different sport, different town, different state. They found the forums. Thousands of parents saying the same things. Coaches saying there wasn’t enough time. Parents saying they were spending thousands of dollars and didn’t know what they were getting.

They realized they were sitting at an unusual intersection: two people who had played sports their whole lives, coached youth athletes, raised kids in club programs, and built careers in tech, marketing, branding, and data-driven environments where progress is measured, not assumed. They also believe that what youth sports are really developing is bigger than athletic skill alone — discipline, resilience, and the ability to compete, recover, and show up again. Skills that last a lifetime. That’s why they coach. That’s why their kids play. And that’s why they built UpLVL.

About the Founders
Joni Kazantzis
Joni Kazantzis
Co-Founder
Joni was an All-Conference midfielder at Massapequa High School on Long Island, one of the most decorated lacrosse programs in the country, before going on to play Division I at Quinnipiac University. She has been coaching youth lacrosse in New Jersey for four years and currently serves on the board of Lightning Lacrosse. She understands athlete development from every angle: as a player, a coach, and a parent watching her own kids compete and grow.
Joni coaching on the field
Michael Kazantzis
Michael Kazantzis
Co-Founder
Michael played sports throughout his childhood and through high school, and has been coaching youth lacrosse in New Jersey for four years while raising kids in club sports. His background in data products, including years at Amazon, along with more than two decades in branding and marketing, shaped a simple belief behind UpLVL: if development matters, families should be able to see it.
Michael coaching on the field
Joni coaching on the field
Michael coaching on the field

That’s why they coach. That’s why their kids play. That’s why they built UpLVL.