In a summer littered with upsets and inconsistency, two teams stand apart. Argentina and Spain have each won their last six matches, the only sides in world football maintaining an unblemished run across competitive and friendly fixtures over recent weeks.
Argentina's streak includes a blend of Copa América knockout ties and subsequent summer friendlies, while Spain's half-dozen extends through their own tournament pathway and follow-up exhibition games. Both have navigated rotation, travel and the physical demands of a packed calendar without dropping a point, a rare feat at international level where momentum often crumbles against minnows or exhaustion.
What the data says
BSD's live tracking shows neither side has posted fewer than 1.5 expected goals in any of the six wins, a marker of sustained attacking intent rather than narrow escapes. Argentina's backline has conceded just three goals across the run; Spain's four. The clean-sheet ratio points to defensive organisation that has held firm even when leads have been slender.
Both camps will know the streak cannot last indefinitely. Fixtures toughen, opponents adjust, form dips. For now, though, Argentina and Spain occupy a bracket of one (or two): the only nations on the planet who can claim six wins on the bounce, no blips, no asterisks.