Race four at Flemington has been overshadowed by a big fall involving jockey Joao Moreira and horse Regal Monarch.
Moreira was being attended to by paramedics after reporting trouble with his right leg after the horror fall, but walked away unassisted, waving to the crowd and giving a thumbs up.
Regal Monarch walked backed to the float and is being taken to Werribee Vet Hospital, with trainer Chris Waller unsure of the extent of the injuries.
Racing Victoria stewards tweeted Moreira would be out for the rest of the day, with Ben Allen named as his replacement for the Melbourne Cup later today.
Moreira was set to ride Thomas Hobson in the Melbourne Cup.