Marc Marquez was training at a track near his home with enduro world champion Josep Garcia, but few other details are known of the accident that has ruled him out of the Algarve MotoGP.
Jorge Martin tries 'Jack Miller treatment' for leg-pump issues, needs to 'face fears' on return to scene of serious injuries in April's Portimao MotoGP.
Johann Zarco heads to the penultimate MotoGP round of the season in Portimao with a 23-point gap to Joan Mir and third in the world championship as a 'good target'.