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Horacio Zeballos Jr. is an Argentine tennis player. He achieved the best results in doubles, a specialty in which he won 18 titles on the major circuit, including 5 in the Masters 1000 category, and reached two Grand Slam finals at the 2019 US Open and at the 2021 Wimbledon tournament, both paired with Marcel Granollers.
He also boasts 34 titles on the ATP Challenger Tour. In September 2019 he reached 3rd place in the world doubles ranking for the first time, his best ranking.
He also excelled in singles, reaching 39th in the ATP rankings in March 2013, the year in which he won his only specialty tournament on the ATP Tour by beating
Rafael Nadal in the final at the Chile Open. He has also won 15 Challenger tournaments in singles.
