NEWTOWN SQUARE, Pa. — Pros don’t wing it when it comes to the distances they hit their clubs. They deal in incriments.

Tommy Fleetwood’s club distances book proves it.

It may look overwhelming to the rest of us—but it’s not qute as confusing as it looks.

All the numbers in black are Tommy’s stock carry yardages for each club.

The page says “England numbers” because that matches the altitude they’re playing in this week, and 20 degrees because that matches temperature. It’s in Celsius—it’s about 85 degrees Fahrenheit.

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Each column represents a different golf variation.

Fleetwood’s got his B swing, which is more of a knockdown. Then there is his small and half swing variations, which give him an even five-yard gapping overall.

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And when he needs an even tighter variation, he’ll do his signature hold off swing, which takes off another three or four yards from his stock swing.

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Also, notice how he’s even got numbers for different bunker shots and a key table for how much wind strengths affect these distances.

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It’s a lot of numbers, but these are the kind of details that matter in pro golf

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This article was originally published on golfdigest.com