Horacio Zeballos

Horacio Zeballos Jr. (locally [oˈɾasjo seˈβaʃos]; born 27 April 1985) is an Argentine professional tennis player. He reached a career-high doubles ranking of world No. 1 on 6 May 2024, becoming the first Argentinian man to achieve the feat. He is a Grand Slam champion at the 2025 French Open and at the 2025 US Open with Marcel Granollers.

In singles, Zeballos has a career-high singles ranking of No. 39, achieved on 4 March 2013. He won his first and only ATP title at the 2013 Chile Open. In the final, he beat Rafael Nadal, becoming one of only five players (with Roger Federer, Novak Djokovic, Andy Murray, and Nuno Borges) to beat Nadal in a clay court final. He also reached the fourth round at the French Open, doing so in 2017, and the final in St. Petersburg in 2009, Russia, losing to Ukrainian Sergiy Stakhovsky. Zeballos won the 2009 ATP Newcomer of the Year award.

In doubles, he has won 27 ATP titles and won two majors alongside Granollers. He reached his first doubles final at the 2010 Chile Open in Santiago, with partner Potito Starace. They lost to top seeds Łukasz Kubot and Oliver Marach. He won his first doubles title at the Argentina Open with Sebastián Prieto.

Zeballos is an Argentine of Spanish descent. He enjoys music, ping-pong, and swimming. His father is also named Horacio Zeballos, and his mother is named Carolina. He has one sister, Carolina Jr. His favorite surface is clay, and Alejandro Lombardo coaches him.

Zeballos competed primarily on the ATP Challenger Tour, where he won five singles titles and six doubles titles.

He reached his first ATP Tour final at the St. Petersburg Open, defeating Yuri Schukin, Oleksandr Dolgopolov Jr., Ernests Gulbis and Igor Kunitsyn before falling in the final to Stakhovsky in a third-set tiebreak.

Zeballos started the singles season in a slump, falling in the first round four times, but had an excellent start to the doubles season. In his first tournament, the Heineken Open, Zeballos and Rogier Wassen defeated the world No. 1 team Bob and Mike Bryan. Zeballos then reached the round of 16 at the Australian Open with countryman Leonardo Mayer and reached the final at the Movistar Open with Italian Potito Starace. Zeballos then turned to the clay in the Copa Telmex in Argentina, where in the first round, he defeated countryman and former French Open champion Gastón Gaudio. It was Zeballos' first ATP singles win since he reached the final in St. Petersburg. Zeballos next defeated former world No. 1 Carlos Moyá and reached his first ATP quarterfinal since October, where he then lost to countryman Juan Mónaco. In doubles, Zeballos and countryman Sebastián Prieto were the fourth seed and won the title against Simon Greul and Peter Luczak. It was Zeballos' first career ATP title. The following week, at the Abierto Mexicano Telcel, Zeballos lost in the first round to Łukasz Kubot. He made it to the doubles semifinals with partner Mónaco.

Zeballos was selected for the Argentine Davis Cup team for the first time. He played doubles with David Nalbandian against the Swedish pair of Robert Lindstedt and Robin Söderling. They won in straight sets. Zeballos reached a career milestone as he defeated his first-ever top-25 player, 24th ranked Gilles Simon, in the second round at the Sony Ericsson Open. He then lost in the third round to the eventual finalist Tomáš Berdych.