World Cup Underdog Win Rate by Tournament

How We're Defining "Underdog" Here

Before diving in, this matters more than people think. Different datasets use different thresholds and produce slightly different numbers.

Three main definitions used across major studies:

• Statista/academic model: underdog equals any team with less than 33.3% win probability in group games, or less than 47% in knockout rounds
• Sporting News 2022 method: underdog equals any team not favored by pre-match betting odds, so anything longer than even money to win
• BettingExpert long-run study: underdog equals any team receiving +1.0 Asian handicap or more

All three definitions point toward the same broad trend. Underdogs are winning more often and the frequency is rising. The specific numbers shift slightly depending on which definition you use but the direction is the same everywhere you look.

Read More: The Complete Guide to World Cup Betting 2026

Tournament-by-Tournament Underdog Victory Counts

Here's the Statista data on total underdog victories per tournament using the sub-33.3% win probability threshold. Read this slowly because the trend is wild.

• 2022 Qatar: 15 upsets — the highest of any World Cup ever recorded
• 2018 Russia: 10 upsets
• 2014 Brazil: 9 upsets
• 2010 South Africa: 8 upsets
• 2006 Germany: 7 upsets
• 2002 Korea/Japan: 9 upsets
• 1998 France: 7 upsets

Upsets per tournament have roughly doubled from the late 1990s to 2022. And 2022 wasn't just a modern high — it was an outlier even by modern standards. Fifteen underdog wins in a single tournament. That's not a blip. That's a new reality.

At Qatar 2022, using the simpler "did the non-favorite win or draw" measure: 24 of 61 matches produced an upset result. That's 39% of all matches. Twelve of those were outright underdog wins — 20% of every match played. In a tournament where favorites carry meaningful pre-match edges.

Your bookie is not sleeping well before 2026.

Want better World Cup bets? Use Shurzy's Predictions tool for data-driven picks and insights.

The Favorite Win Rate Across Five Tournaments

OLBG compiled match-level data across 2006 to 2022, covering 320 total matches. The headline number: favorites win 55% of World Cup matches.

That's it. 55%.

For context, top domestic leagues typically see favorite win rates of 58 to 65%. The World Cup's compressed format and single-elimination stakes make it significantly less predictable — even for elite teams. Here's the year-by-year breakdown:

• 2006: 66% — strongest favorite performance of the modern era, very few group stage shocks
• 2010: 52% — sharp drop, multiple underdog runs deep into the tournament
• 2014: 50% — the weakest favorite performance on record, Costa Rica and Colombia doing damage everywhere
• 2018: 56% — partial recovery but Germany still crashed out of the group stage
• 2022: 53% — second weakest ever, Saudi Arabia and Japan and Morocco all beating major favorites

After the 66% peak in 2006, favorite win rates dropped into a 50 to 56% band and have stayed there. No sign of reverting. None.

Matchday 2 Is Where Chaos Lives

OLBG's granular data breaks underdog rates down by matchday. And one round stands out.

Matchday 2 is the most volatile group stage round across five tournaments. It consistently produces the lowest average favorite win rate of any matchday. The theory makes sense when you think about it: mid-group games carry the highest strategic uncertainty. Teams know their position but not yet who needs exactly what result to advance.

That creates hesitation. Rotation. Tactical weirdness. And underdogs thrive in that environment more than any other point in the group stage.

If you're looking for group stage upset value, Matchday 2 is your starting point. Not Matchday 1 when everyone is fresh and motivated, not Matchday 3 when the math is clear. Matchday 2. Right in the middle of the chaos.

Read More: World Cup Motivation and Incentive Based Betting

Which Countries Actually Deserve to Be Favorites

Not all chalk is equal. Some teams justify their favorite prices consistently. Others are basically a trap.

Best favorite records from 2006 to 2022 (minimum 5 matches as favorite):

• Colombia: 6 wins from 7 matches as favorite — 86%
• Netherlands: 12 from 15 — 80%
• Belgium: 8 from 11 — 73%
• Uruguay: 7 from 10 — 70%

Worst favorite records in the same period:

• Serbia: 1 win from 6 matches as favorite — 17%
• Denmark: 2 from 6 — 33%
• Italy: 4 from 11 — 36%

Italy at 36%. Let that sink in. Every time Italy has been a World Cup favorite since 2006, they've lost that match almost two thirds of the time. Yet books keep pricing them like chalk and bettors keep backing them like chalk.

That's a structural mispricing that has existed for nearly 20 years. Your bookie is counting on you not knowing this.

The Asian Handicap Underdog Edge

The BettingExpert long-run study covers backing every large underdog at +1.0 Asian handicap or more across World Cups from 1998 to 2018.

The results:

• Win or push rate just under 54% on the handicap line
• Profit of +5.62 units over 140 matches
• ROI of approximately 4% at level stakes
• Profitable in every tournament except 2002 and 2006

4% ROI across 140 matches is a real edge. Not a fluke. Not one lucky tournament. A consistent structural lean that held up across two decades of betting data.

The edge has appeared to narrow as books have gotten more sophisticated. But it hasn't disappeared. Large World Cup underdogs cover their handicap more often than the market implies. That's the whole story.

What 2026 Probably Looks Like

For 2026, implied probability models show top seeds dominating their groups:

• Spain: 81.8% implied probability to win their group
• England: 76.2%
• Brazil: 78.7%
• Argentina: 77.3%
• France: 69.7%

Books expect the superpowers to run through their groups. And they probably will. But here's the thing — overall tournament favorite win percentages will likely stay in the 53 to 58% band anyway. Because:

The 48-team format adds more group stage mismatches, which temporarily raises match-level favorite win rates slightly. But the expanded knockout bracket adds an extra round. More games means more opportunities for underdogs to produce shocks. And the 2022 parity trend shows absolutely zero signs of reversing.

Underdogs have doubled their win rate since 1998. 2022 set a record nobody saw coming. 2026 has even more teams, even more rounds, and an underdog betting edge that the market hasn't fully corrected for.

Before you bet the World Cup, check Shurzy's Predictions for the best betting angles and value plays.

The bottom line is simple. World Cup favorites win about 55 of every 100 matches. Pre-tournament outright favorites win the trophy only about 25 to 38% of the time. And the underdog win rate per tournament has roughly doubled since 1998.

Marco's $460 wasn't luck. It was the future arriving early.

Looking to get an edge throughout the entire World Cup? Check out Shurzy's Predictions tool for data-backed picks, matchup insights, and betting angles across every stage of the tournament. Whether it's group matches or knockout rounds, this is where smart bettors find value.