Photos reveal Bartyâs secret Australian Open weapon Ash Bartyâs coach has revealed the star has picked up a secret weapon as a result of her long break from the game, as she looks to claim her first home crown. Tennis by Scott Gullan Premium Content Subscriber only In an ominous warning to her rivals Ash Barty's coach says a new stronger version of the world No.1 will be unveiled at the Australian Open. Craig Tyzzer says the potential negative of an 11-month break between competitive matches is offset by significant improvements in the Queenslander's physical make-up. Barty's trusted mentor believes the 2019 French Open champion is a genuine chance to win her first Australian Open but concedes the lack of match play is the "biggest unknown".