Horacio Zeballos - Argentina  

Horacio Zeballos (born on April 27, 1985 in Mar del Plata) is a professional Argentine tennis player on the men's circuit. His highest singles ranking to date is World Number 41, which he reached on November 16, 2009. His highest doubles ranking to date has been World Number 48, on February 22, 2010. He has played most of his tennis on the Challenger events. He qualified for the US Open and defeated Michael Berrer in the first round for his first win at Grand Slam level, before losing to Tomáš Berdych in 4 sets in the second round.

He reached the final in the St. Petersburg Open in Russia, losing to Ukrainian Sergiy Stakhovsky. He also reached the doubles final at the Movistar Open in Santiago in 2010, partnered with Potito Starace. They lost to the number 1 seeds, Lukasz Kubot and Oliver Marach. He then won the title in doubles at the Copa Telmex with Sebastian Prieto. Zeballos won the 2009 ATP Newcomer of the Year award on February 17, 2010.