A source told The Sun: “Leonardo played a blinding role in his own real-life Hollywood movie. He saved the life of a man overboard who incredibly had survived by treading water for 11 hours. Leonardo’s boat was the only vessel looking for him.
“The captain put the man’s chances of survival at one in a billion — like winning the lottery twice.”
The Once Upon a Time in Hollywood actor, 45, was with lover Camila Morrone, 22, and pals when his vessel heard a Mayday call on December 30.
A drunk French crewman, 24, had fallen from a Club Med yacht near St Martin in the Caribbean.