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The claim: “2-0 is the most dangerous lead.”

Teams that go 2-0 up almost never let it slip.

Not even when the opponent pulls one back. If any score is dangerous, it is 1-0.

VerdictMyth

How often the team in front failed to winEach case against teams that were 1-0 up at the same minute. World Cups 1986 to 2026, result at 90 minutes.

After going 2-0 up

Went 2-0 up1-0 up, same minute5%27%

5% of teams that went 2-0 up did not win.

After the opponent pulled one back to 2-1

2-1 up1-0 up, same minute16%22%

16% of teams whose 2-0 became 2-1 did not win.

What it means

5%of teams that went 2-0 up did not win. At 1-0 at the same minute, 27%.
16%let it slip after it became 2-1. Still fewer than the 22% of teams holding a 1-0 lead at the same minute.
261matches since 1986 where someone went 2-0 up. In 74 of them, the opponent pulled one back.
How we know
Base
group and knockout matches of the 1986 to 2026 World Cups, third-place matches excluded: 261 with a 2-0, 74 of them followed by a 2-1.
A fair comparison
each case is compared with teams that were 1-0 up at the end of the same minute (in 15-minute bands), because holding a lead depends on how much time is left.
Rule, written before looking at the data
the claim would be true if, after the 2-1, failing to win were at least 5 points more common than at 1-0. The difference was -6 points (interval -15 to +4). Myth.
Closed list
this claim is part of a list tested in one go, with the rule set in advance. Every claim is published, including the ones that came to nothing.

See the code and the data