Spanish rider Hector Barbera is likely to miss the upcoming US MotoGP at Laguna Seca after breaking his left leg and shinbone in a training accident.
Ducati said their sole rider would undergo surgery in Barcelona on July 22 and doctors would then determine his recovery time.
Surgeon Xavier Mir said in a statement: "We are confident that Hector will
be able to leave the hospital in 48 hours and can begin light physical
activity in seven days.
"We need to evaluate the progress of the patient but we can reasonably think that he will be able to run a race in four or six weeks, according to his feedback."
The injury came only a week after the rider secured his first front row MotoGP start by qualifying third for the Italian Grand Prix. Barbera is 11th overall with 60 points.