Horse racing: Wolfgang claims thrilling St Leger victory, eyes Melbourne Cup / Horse racing - I Wish I Win retires: New Zealand sprinter's remarkable career ends / Horse racing: Our Echo takes Wingatui feature in thrilling finish / Horse racing: Willydoit out to scare and smash away opponents at Ellerslie / Horse racing: Legarto all class in winning Lisa Chittick at Matamata / Horse racing: NZ Thoroughbred Racing appoint Matt Ballesty as new CEO / Horse racing: Orchestral must shrug off bum notes of this season / Horse racing: Trainer's advice for TAB Karaka Millions at Ellerslie: 'Get on the Bourbon train' / Horse racing: Walker vying for another Melbourne Cup Day success at Flemington / Horse racing: Road to Riccarton a frustrating path for Gerard