Coach Craig Tyzzer is being hailed as the "unsung hero" of Ash Barty's incredible rise from disillusioned tennis talent to all-conquering world No.1.
Barty is on the cusp of ending the country's 44-year wait for another home-bred Australian Open singles champion after marching into Saturday night's final without dropping a set.
Her vanquished semi-final opponent Madison Keys says the top seed is proving almost unplayable this summer and Australia's Billie Jean King Cup captain Alicia Molik believes that's as much down to Tyzzer as Barty herself.
