Similar happened back in 2017 when Peter Clements trashed the Corsair at the Hunter Valley Airshow. Again Pete failed to conduct adequate pre landing checks, and verify correct gear extension position.
It was Paul Bennet from Paul Bennet Airshows, he forgot to lower the gear. BIG MISTAKE. Aircraft was owned by Pays Air Service. VH-IXF. Such a shame, huge structural and prop damage, with 20 hours on it after restoration.