A Tennis Journal

The Game
Behind
the Game

Match analysis, gear science, and the stories between points.


Vol. 03 · Issue 14 · February 2026

The Writer

Writer at courtside with notebook, Roland Garros clay background

Marco Delacroix

Former ITF junior, now watching from the press box.

I started tracking unforced error patterns on clay during the 2019 Roland Garros because I had a bet with my coach about Thiem's forehand under pressure. I lost the bet. I won something better: a framework for reading tennis that no broadcast team was using.

Volley is what I write when a match deserves more than a scoreline. One issue per week. No filler, no aggregated scores you already saw on your phone at 2am.


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Most Read

Tennis player executing forehand stroke on clay court, red dust rising
Match Breakdown12 min read·Feb 18, 2026

Why Alcaraz's Forehand Breaks Down in the Fifth Set on Clay

It's not fitness. It's not nerves. It's a single kinetic chain decision he makes at contact that costs him 4.3 unforced errors per game in final-set pressure situations on red clay.

"At 5-4 in the fifth, his forehand isn't a weapon anymore — it's a liability he's managing."

Close-up of tennis racket strings with measuring gauge, technical detail
Gear Science9 min read·Feb 11, 2026

The String Tension Myth: What the ATP Stringer Data Actually Shows

Every pro claims a different tension. The data from 2025 ATP stringing logs tells a different story — one where the variance is almost entirely psychological, with one measurable exception.

"The tension difference between Djokovic's first and third set rackets is 0.2 kg. The difference in his mindset is everything."

Young tennis player in focused stance at baseline, tactical positioning
Player Profile15 min read·Feb 4, 2026

Holger Rune's Tactical Intelligence Is Three Years Ahead of His Physical Peak

Most 21-year-olds win on athleticism. Rune wins on chess. His pattern recognition in return games is closer to a 28-year-old veteran than someone who still has a teenage serve motion.

"He doesn't read the game like a prodigy. He reads it like someone who's already lost 40 finals and learned from every one."

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Volley

The 30 Patterns That Decide Every Match

PDF · 47 pages

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The 30 Patterns That Decide Every Match

47 pages. Built from 3 years of ATP match data, annotated with shot diagrams and tactical context. The patterns that separate club players who plateau from those who keep improving.

  • Return positioning patterns by surface
  • Serve-plus-one sequencing across Top-20 players
  • Break-point conversion triggers (not what you think)

One deep-dive per week. No scores you already know.