The turning point arrived in the 56th minute, when Metz defender Benoit Assou-Ekotto was shown a red card for his tough foul on Mbappe, who scored three minutes later.

Neymar, who joined from Barcelona on a record fee of 222 million euros, proved himself as he was left unmarked just beyond the penalty area in the 69th minute. The world's most expensive player fired a low shot for his fourth league goal.

Cavani recorded his second in the game for a seven-goal tally, setting himself as the leading scorers along with Monaco's Radamel Falcao. Lucas Moura capped the night with a shot with two minutes remaining, handing Metz their fifth straight loss.

Elsewhere on Friday, Lille and Bordeaux had to settle on a goalless draw.

Monaco, the other team with all wins so far, will visit Nice on Saturday.

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