It means Saudi are on track to stage a memorable upset, one that would go down in the World Cup history books.
Argentina have, prior to this game, gone 36 matches unbeaten.
That’s just one shy of Italy’s record, with Roberto Mancini’s team managing a streak of 37 before losing to Spain in the Nations League this year.
While Saudi fully deserve their goals, however, they’ve also been let off the hook with Argentina seeing two goals disallowed.
Messi had an effort chalked off, with the PSG star just a fraction offside as he put the ball into the net.
