Apprentice jockey Hollie Doyle was taken to hospital for further assessment after suffering a fall at Goodwood.
Doyle got the evening off to a flying start after steering the Richard Hannon-trained Royal Household (5-6 favourite) to victory in the opening six-furlong novice auction stakes, but came to grief after the line in the very next race.
Doyle was partnering Phil McEntee's Pearl Spectre in the apprentice handicap when she was badly hampered by the David Egan-ridden Noble Peace inside the final two furlongs.
Egan was found guilty of careless riding by the stewards and was suspended for eight days (June 30 to July 7 inclusive).
Doyle remained in the saddle as Pearl Spectre passed the post last of nine runners, but was dumped on the turf shortly afterwards after her mount stumbled.
McEntee said: "I'm not 100 per cent sure what happened, but I know she was fully conscious and talking to the owner, who has gone with her to St Richard's Hospital in Chichester."