LONDON -- The men's ATP tour will try to shake up doubles tennis by trialing changes including a 15-second serve clock and reserving slots for teams to enter tournaments using their singles rankings.
Wesley Koolhof of the Netherlands returns in front of Nikola Mektic of Croatia during their doubles final match against Horacio Zeballos of Argentina and Marcel Granollers of Spain at the BNP Paribas ...
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