Saudi Arabia pulled off one of the World Cup's biggest shocks as they came from behind to stun two-time winners Argentina.
Saudi Arabia, ranked 51st in the world, could have been done and dusted in the first half as Lionel Messi opened the scoring from the penalty spot before Argentina had three goals ruled out for being inaudible.
Saudi Arabia turned the game on its head in a stunning 10-minute period after half-time, with Salem Al Dawsari firing them ahead and Saleh Al Shehri leveling with a low effort.
Having shown their ruthlessness at one end, the Green Falcons demonstrated a ruggedness at the other, holding a stellar Argentina front line to bay and throwing the group wide open.
Lionel Scaloni's Argentina came into the tournament as one of the favorites after a 36-game winning streak.
They have to do everything they can to keep alive their hopes of a first global triumph since 1986 and give Messi a fitting end to the World Cupong.
Saudi Arabia takes on Poland on Saturday.
There's more to come.