Vallejo also said he was unhappy with how much time Kouame was given in between points.

Players are only allowed to take up to 25 seconds between points, but umpires can use their discretion as to when to start the shot clock while the crowd settles down.

"I think this sort of matches should be umpired by a man," Vallejo told Clay magazine, external in an interview listened to and verified by BBC Sport.

"It's very difficult for a woman to do it because the crowd is very annoying and you need to have a lot of courage to go against the crowd.

"I knew it [the crowd] was going to be like that. It didn't harm me, it only strengthened him."

Asked whether having a male umpire would have made a difference, Vallejo added: "Yes, yes, absolutely. The crowd was really disrespectful, but I understand it because they are supporting their home player."

Vallejo subsequently took to social media to defend his comments, stating on X that they had been "taken out of context" and he was referring to Carvalho specifically, rather than all female umpires.

But he later apologised, saying he has "respect" for the umpire and "will learn and get better with this".

The French Open added: "The tournament strongly condemns all sexist remarks, regardless of who makes them, and offers its support to the match umpire and, more broadly, to all the tournament's umpiring officials."

The Grand Slam rulebook states that players "shall at all times conduct themselves in a sportsmanlike manner and give due regard to the authority of officials and the rights of opponents, spectators and others".