John Tapp September 25, 2018 Horse Racing, John Tapp, Podcast, Trainer Episode 30: Tappy chats with Leon Macdonald John Tapp September 25, 2018 Horse Racing, John Tapp, Podcast, Trainer The powerful Lindsay Park training empire has dominated South Australian racing since 1965.Adelaide trainers have always struggled to compete, but Leon Macdonald has managed to win two premierships in his own right.