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Roger Federer studied Novak Djokovic loss ahead of Denis Istomin clash at Australian Open | Tennis | Sport | Express.co.uk
AusOpen on Twitter: "ICYMI: Wildcard Denis #Istomin ousts six-time Australian champion #Djokovic in five grinding sets: https://t.co/ROyVJ47yWm #AusOpen https://t.co/6MMEAS127X" / Twitter
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Federer was the toughest opponent from the Big Three. He was...': Denis Istomin | Tennis News - Hindustan Times
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Getting to Know You: Denis Istomin - Official Site of the 2023 US Open Tennis Championships - A USTA Event
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