Why Going 38-0 Is Almost Mathematically Impossible

Why has no football team, however great, ever gone 38-0? The romantic answer is about pressure, fatigue and the unpredictability of the sport. But the simplest answer is arithmetic. To win all 38, you have to win every match — and probabilities that look comfortable for one game become vanishingly small when you multiply them 38 times.

The core calculation

If a team’s probability of winning any single match is p, then its probability of winning all 38 — assuming each match is roughly independent — is:

p³⁸

Plug in some numbers for a strong side:

• Win 80% of matches → 0.80³⁸ ≈ 0.02% (about 1 in 5,000 seasons)
• Win 85% of matches → 0.85³⁸ ≈ 0.2%
• Win 90% of matches → 0.90³⁸ ≈ 1.8%
• Win 95% of matches → 0.95³⁸ ≈ 14%

To even have a realistic shot at a perfect season, a team needs to win roughly 95% of its games — which would mean losing or drawing barely once or twice across an entire year. No side has ever sustained that.

For context, Manchester City’s record-breaking 2017–18 season — 100 points — was a 32-win campaign, a win rate of about 84%. That gives a per-season perfect probability of well under 1%, and indeed they dropped points ten times.

Why draws are the killer

This is the crucial difference between “unbeaten” and “perfect,” and why 38-0 is so much harder than what Arsenal’s Invincibles achieved.

Across a typical league season, roughly a quarter of all matches end in a draw. An unbeaten run tolerates every one of those — a draw doesn’t end it. A perfect run tolerates none. So a perfect season doesn’t just require you to almost never lose; it requires you to almost never even draw, in a sport specifically prone to tight, low-scoring games that finish level.

A single well-organised opponent parking the bus for a 0-0, one inspired goalkeeper, one deflected equaliser in stoppage time — any of these ends a perfect run while leaving an unbeaten one intact.

How this game reflects the maths

38-0 is tuned so the arithmetic actually bites. Building a genuinely elite XI — top-tier legends at every position, strong chemistry, the right era — gets your per-match win probability high enough that a perfect season is possible, at roughly a 15–20% chance per run. A merely good XI drops to a few percent. An average one is effectively zero, exactly as the probabilities above predict.

That’s deliberate. A 38-0 season should feel like beating the odds, because in real life those odds have never been beaten. To give yourself the best chance, study the draft strategy guide and which era to draft in.