Umpire Kader Nouni did not spot the fact that it clearly bounced twice at a critical moment and Cerundolo went onto be broken and priorly, he was penalised for putting away the smash with a ball kid already on the court.
The reason Cerundolo advanced was solely due to the double bounce and it left the crowd in disbelief at the French Open.
(VIDEO) Pouille fumes as Norrie caught in double bounce controversy at Roland Garros: "It touched the floor"
"Well, well, well. The umpire has made a huge mistake here. Would he have known that that was a double-bounce, Rune," said the Eurosport commentator Barry Cowan.
"Oh, so he penalised Cerundolo? But he didn’t stop, unless he said something, because I’ll see players stop in a point, and then all of a sudden they give them the fake."
Cavaday added: "Oh, no! Maybe it was because Cerundolo stopped playing. A big mistake and it’s so costly!
"He stopped before he hit the final shot because there was the double bounce from Rune. He hadn’t picked the ball up."