Monaco showed flashes of continuing their dominance against Nantes as Gelson Martins turned home Caio Henrique’s cross at full stretch in the 14th minute and gave the host the deserved lead.
However, Nantes weathered the storm and stayed firm in the face of Monaco pressure and remarkably got themselves on level terms, just before the break.
Completely against the run of play, Castelletto took advantage of non-existent Monaco defending to head his side level from a corner (42′). It was the Cameroonians first goal for Nantes since arriving from Brest in 2020.
The first half goal scored by both side was enough for them to share the points as the new season got underway with a 1-1 draw.