As the 2026 PGA Championship unfolds at Aronimink Golf Club, we're getting a rare peek behind the curtain at what separates the pros from the rest of us. While weekend golfers might step up to a shot and think, "This feels like a 7-iron," the world's best don't leave anything to chance—they've got it all written down.

Take Tommy Fleetwood's club distances book, for example. It might look like a complex spreadsheet at first glance, but once you understand the system, it's pure genius. Every single number tells a story of precision and preparation.

The black figures represent Fleetwood's stock carry yardages for each club. But here's where it gets interesting: the page is labeled "England numbers" at 20 degrees Celsius (about 68°F), which matches the conditions they're playing in this week. That's right—temperature and altitude matter so much that pros adjust their entire distance chart accordingly.

Fleetwood's system goes even deeper. He's mapped out his "B swing"—a knockdown shot that takes something off the ball—along with small and half swing variations that create a consistent five-yard gap between each option. When he needs even finer control, there's his signature "hold off" swing, which shaves off another three or four yards from his stock distance.

The attention to detail doesn't stop there. His book includes specific numbers for different bunker shots and a critical table showing how varying wind strengths affect each club's carry distance. It's this level of preparation that allows players like Fleetwood to attack pins with confidence while the rest of us are just hoping to find the green.

For the serious golfer, this inside look is a reminder that consistency comes from knowing your numbers cold. Whether you're playing in weekend skins or dreaming of competing at the highest level, having a system—even a simplified one—can transform your game. After all, if it works for a Ryder Cup star, it's worth taking a page from his book.