Jockey Jess Taylor appears to have broken her right wrist for the second time in a fall at Gosford.
Taylor, who only recently returned from the first injury, came down in the third race on Thursday.
Racing NSW said Taylor was being taken to Gosford Hospital for further assessment and treatment but was conscious and did not seem to have any other injuries.
G3 - The Coral.co.uk Winter Derby (class 1)
G2 - The Sky Bet Dovecote Novices' Hurdle Race (class 1)
G2 - The Betbright Pendil Novices' Steeple Chase (class 1)
G2 - The Betbright Adonis Juvenile Hurdle Race (class 1)
G3 - The Betbright Steeple Chase (handicap) (class 1)