Damien Oliver will travel to Sydney on Wednesday to provide evidence at a Racing NSW inquiry related to Kathy O’Hara’s fall in the ATC Australian Oaks.

O’Hara’s mount Single Gaze stumbled and hit the turf soon after entering the home straight, leaving the leading female rider with multiple injuries, including a dislocated sternoclavicular joint, which was putting pressure on her windpipe and affecting her breathing.

Oliver rode the Ciaron Maher trained Jameka in the ATC Australian Oaks.

Jameka was positioned to the inside of Single Gaze approaching the home turn before Oliver aimed for a run inside the Snowden-trained Happy Hannah.

On the point of the home turn Oliver improves to the inside of Happy Hannah, who then shifts out on to Single Gaze, leaving O’Hara crashing to the turf.

“We’ve had to wait for Kathy’s recovery and then find a time when all parties could be present at the same time to conduct the inquiry,” said Racing NSW chief steward Ray Murrihy.

“We were due to hold it before the first race on Wednesday but Kathy has a physiotherapy appointment in the morning so now it will be done after the last race at Canterbury with Damien Oliver and Blake Shinn, who rode Happy Hannah, providing evidence.”

Oliver is currently serving a month-long suspension for failing the alcohol breathalyser test at Warrnambool.

O’Hara has made a swift recovery from her injuries and is expected to return to track work on Thursday.

LISTEN: Kathy O'Hara talks to Michael Felgate on Racing Ahead about her horror fall