Carlos Sainz's race weekend is over -- the star Ferrari driver will not compete in the Formula 1 Saudi Arabian Grand Prix on Saturday ... after the team revealed he was diagnosed with appendicitis.
The 29-year-old Spanish driver -- who sat out of Wednesday's media availability -- tried to fight through the illness during practice sessions on Thursday ... but called it the "toughest day" he's ever had in the sport due to the track's high G-Force.
Sainz was hoping to get over the stomach bug and return to full health in time for the race .