Paul Annacone believes Djokovic and Medvedev will engage in a back-and-forth battle over the No.1 ranking - TennisUpToDate.com

The top spot in the ATP Rankings will 'see-saw' between Nova

The top spot in the ATP Rankings will 'see-saw' between Novak Djokovic and Daniil Medvedev over the next few months, according to former coach and tennis pundit Paul Annacone. After spending more t… [+1343 chars]

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