Japan secured a commanding 4-0 victory over Tunisia in a historic World Cup fixture, marking the 1,000th game in tournament history.
The result leaves newly appointed Tunisia head coach Hervé Renard facing an immediate group-stage exit.
Tunisia had dismissed Sabri Lamouchi after a heavy 5-1 loss against Sweden and named Renard as their seventh manager since qualification began.
However, the change had minimal impact on the pitch.
Renard had only three days with the squad before the match.
He kept the tactical formation of his predecessor but made three personnel changes, including Aymen Dahmen replacing Mouhib Chamakh in goal.
Japan Dominates from Kickoff
Japan nearly earned a penalty within 70 seconds when Ellyes Skhiri clipped Ayase Ueda inside the area, but referee István Kovács waved play on and VAR did not intervene.
Japan took the lead in the fourth minute through a swift attack. A low cross from Keito Nakamura deflected off Daichi Kamada's heel into the net.
Japan manager Hajime Moriyasu made four changes from the team that drew 2-2 with the Netherlands. Takefusa Kubo missed out due to injury.
Ueda extended the lead in the 31st minute. He turned unmarked and struck a low shot through Montasser Talbi's legs.
Tunisia improved defensively after halftime, but Japan controlled possession and tempo.
Junya Ito added a third goal in the 69th minute after a flick from Ueda, with Mohamed Amine Ben Salida playing him onside.
Ueda completed the scoring with a clever looping header for his second goal of the match.
Tunisia must now prepare for their final group stage fixture against the Netherlands.
