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That's How I Rollerboard…

The Official Blog of Max Effgen

That's How I Rollerboard…

The Official Blog of Max Effgen

GameChanger: The Operating System of the Saturday Game

Max Effgen, September 24, 2026September 23, 2026

GameChanger started as a way to keep a youth baseball and softball scorebook without a pencil. It is now the default way millions of families watch your favorite 10-year-old’s at-bat from another state, and one of the few consumer apps that can tell you, in public numbers, how large youth…

On-Base Percentage for an Uneven Labor Market

Max Effgen, September 22, 2026September 16, 2026

The useful idea in Moneyball was never that scouts were stupid. It was that the market was paying for the wrong stat. Oakland could not outbid the Yankees for home runs, so Billy Beane paid for on-base percentage — a cheaper way to not make an out. Michael Lewis’s 2003…

How to Do Great Work

Max Effgen, September 17, 2026September 10, 2026

Paul Graham’s important essay from 2023 assumes you can choose your field, your hours, and your risks. Most people can’t. Here’s what still works when you don’t have any of that. Paul Graham is a programmer, essayist, and co-founder of Y Combinator, and the essays he’s published since the early…

MLB’s ABS Challenge System: A Season of Data, Not Robot Umpires

Max Effgen, September 15, 2026September 14, 2026

I grew up with the Chicago Tribune sports section. Box scores before school. Sports Illustrated, This Week in Baseball, the usual stack of player biographies. On television the argument was always the same: the human eye was part of the game, not a defect in it. Instant replay arrived late…

Bo Schembechler jumped the line at an Ann Arbor barbershop

Max Effgen, September 10, 2026September 7, 2026

Over thirty years ago, Bo Schembechler jumped the line at an Ann Arbor barbershop. I’ve told this story before: Ann Arbor, sophomore year, a barber named Jerry who cut hair for Michigan’s best for the right price. Bo — freshly retired from coaching, still UM’s athletic director and President of…

The Oura lawsuit is aimed at 53%. The claim under scrutiny is 95%.

Max Effgen, September 6, 2026September 7, 2026

A California class action filed last month (August 20, 2026, filed in Northern District California, San Francisco) alleges that Oura’s sleep-stage tracking is closer to a coin flip than clinical science. The complaint, Surber v. Oura, Inc., cites one study that found roughly 53% accuracy across 45 nights. That number…

32 Equity: The NFL’s Quiet Ownership Play

Max Effgen, September 2, 2026August 24, 2026

Every NFL owner has quietly put $8 million into the same fund since 2013. Today that fund is reportedly worth more than $100 million per team. The vehicle is called 32 Equity—the league’s collective venture arm—and it runs a different playbook from the one the NBA uses with Launchpad. NBA…

Alan Watts

Max Effgen, August 31, 2026September 2, 2026

Alan Watts had a trick that still works better than most of the industry built on top of his foundational work. He would borrow the heavy furniture of Vedanta, Zen, and Taoism—Atman, no-self, the watercourse way—and then refuse to treat any of it as furniture. He talked the way a…

Well-Placed Resistance Will Win

Max Effgen, August 29, 2026August 21, 2026

Quality of placement beats quantity of pounds. Why 4–6 lbs of Well-Placed Resistance Beats 20 lbs of Bad Resistance Most people still think more weight equals better training. Strap on 20 pounds, walk farther, feel the burn, call it progress. The math looks clean on paper. More often than not,…

MLS Innovation Lab and the NHL Innovation Lab

Max Effgen, August 26, 2026August 21, 2026

Two Different Paths to the Same Goal Sports leagues used to wait for technology to show up and then decide whether to buy it. That era is ending. More leagues are building their own pipelines to find, test, and shape the tools they actually need. Two of the clearer examples…

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Max Effgen

Max Effgen

I build and grow technology companies as an entrepreneur and angel investor, backing early-stage startups in AI, health & wellness, ultra-low power radio, and enterprise software. I test performance gear the same way I evaluate companies: what actually works in the real world.

Measure what matters. Your body keeps score.

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