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The 21-year-old will be working with Nalbandian, a former Top 3 player, in Cordoba.

The Swiss star has won the season-ending championships six times in his career.

The former world No. 1 from Brazil won Roland Garros three times.

Andy Roddick and Juan Carlos Ferrero squared off in the championship match.

After overcoming some early struggles, the Swiss is now the all-time title leader there.

Take a dive into the list of the ten most surly, fit-throwing characters in ATP history. 

All in all it was a decade full of spectacular tennis, but there were some speed bumps.

The title match between Novak Djokovic and Juan Martin del Potro went the distance.

Nick Kyrgios takes his place at the top of the all time biggest fines in tennis history.

Following a Wimbledon exit, the 34-year-old went gentle into that good night, so to speak.

Alexander Zverev and Guido Pella faced off for the title at the clay-court tournament.

Djokovic has thrived, but Federer, Nadal and Murray only have two titles between them.

Though there hasn't been an American champ in 17 years, there have been some solid runs.

The world No. 3 let loose with some toys in the Bahamas.