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Australian mare Winx is world's top-rated racehorse

Winx tied with Black Caviar on 25 straight wins

Goes for 26th consecutive victory in Sydney on August 18

CNN  — 

She’s the superstar of Australian racing, but Winx is also rated No.1 worldwide after she retained top spot in the Longines World’s Best Racehorse Rankings.

Winx is tied with the legendary Black Caviar on 25 straight victories, but she will bid to go one better when she returns to racing at Royal