Roger Federer is probably the greatest ever: Marion Bartoli

Roger Federer is probably the greatest ever: Marion Bartoli

The Swiss won the last of his 17 Grand Slam titles at Wimbledon in 2012 and is struggling in the face of the rapid rise of Novak Djokovic.

Novak Djokovic: Rafael Nadal is still `king of clay`

Novak Djokovic: Rafael Nadal is still `king of clay`

Last season, Stan Wawrinka broke Djokovic's dream of completing a career Grand Slam.

Australian Open, men's semifinal: Novak Djokovic vs Roger Federer - As it happened...

Australian Open, men's semifinal: Novak Djokovic vs Roger Federer - As it happened...

In a high-voltage encounter, Swiss legend Roger Federer will take on defending champion and World No. 1 Novak Djokovic in the first men's semi-final at the Rod Laver Arena.

Australian Open: Djokovic vs Federer – Date, Time, TV listing and everything else about dream semi-final

Australian Open: Djokovic vs Federer – Date, Time, TV listing and everything else about dream semi-final

Their 44 meetings is only the second highest rivalry tally in the Open era, beaten by the 47 between Djokovic and Nadal.

WATCH FULL HIGHLIGHTS: How Rafael Nadal was stunned by Fernando Verdasco at Australian Open

WATCH FULL HIGHLIGHTS: How Rafael Nadal was stunned by Fernando Verdasco at Australian Open

Nadal, who hasn't been in the best of form in the last few years, was once again knocked out early in a Grand Slam.

Australian Open 2016: Novak Djokovic starts as favourite after incredible 2015

After a gap of few months, we are back again to the first Grand Slam of the year. Unlike women's tennis, there's not much unpredictability in the men's section when it comes to majors.

Rafael Nadal stunned by Fernando Verdasco in Australian Open Round 1

Rafael Nadal stunned by Fernando Verdasco in Australian Open Round 1

Verdasco smashed 90 winners and 91 unforced errors during the five-set battle.

Five storylines to follow through Australian Open 2016

Five storylines to follow through Australian Open 2016

Qatar Open: Novak Djokovic thrashes Rafael Nadal in Doha final, claims 60th ATP title

Qatar Open: Novak Djokovic thrashes Rafael Nadal in Doha final, claims 60th ATP title

Djokvic, who entered the final unscathed, without dropping a set, has now won his 60th ATP title. But it was a sad story for the Spaniard, who was playing in the 99th career final.

Real Madrid have got perfect person in Zinedine Zidane: Rafael Nadal

Real Madrid have got perfect person in Zinedine Zidane: Rafael Nadal

Nadal, however, expressed his disappointment over the dismissal of Rafael Benitez.

Qatar Open: Novak Djokovic, Rafael Nadal storm through to quarters

Qatar Open: Novak Djokovic, Rafael Nadal storm through to quarters

 In the new season, Djokovic has spent just two hours on court in the first two rounds at Qatar Open.

VIDEO: Novak Djokovic, Rafael Nadal take rivalry to a 'new' surface

VIDEO: Novak Djokovic, Rafael Nadal take rivalry to a 'new' surface

Nadal and Djokovic on Sunday tried their hand at beach tennis. 

Rafael Nadal starts 2016 with a bang; captures 3rd  Mubadala World Tennis Championship title

Rafael Nadal starts 2016 with a bang; captures 3rd Mubadala World Tennis Championship title

Nadal had previously won this professional tennis exhibition tournament in 2010 and 2011.

Rafael Nadal, David Ferrer to begin new season in Abu Dhabi

Rafael Nadal, David Ferrer to begin new season in Abu Dhabi

Murray, Djokovic will not be playing in the championship despite being the finalists at last year's edition.

Novak Djokovic: 5 facts you must know about the Serb's incredible year

Novak Djokovic: 5 facts you must know about the Serb's incredible year

In 2015, Novak became the second tennis player ever (after Robin Soderling) to defeat Rafael Nadal at French Open.

Former world number 4, Robin Soderling retires after battling glandular fever for four years

Former world number 4, Robin Soderling retires after battling glandular fever for four years

Robin Soderling, who famously became the first man to beat Rafael Nadal at the French Open, has finally called it a day after fighting glandular fever for four years.

Novak Djokovic, Serena Williams reign despite sudden impact shocks

Novak Djokovic, Serena Williams reign despite sudden impact shocks

Djokovic ended 2015 with 11 titles, 82 wins and just six defeats.

After Rafael Nadal, Deepika Padukone meets Saina Nehwal!

After Rafael Nadal, Deepika Padukone meets Saina Nehwal!

Bollywood stars and industry big wigs were present at the venue to watch the Spanish matador in action. 

Is Rafael Nadal set to start the new season with a bang?

Is Rafael Nadal set to start the new season with a bang?

Nadal, who last won a Grand Slam title at Roland Garros 2014, did not win a major in 2015.

Meeting with Rafael Nadal leaves Deepika Padukone star-struck

Meeting with Rafael Nadal leaves Deepika Padukone star-struck

The “Piku” star thanked Nadal on Twitter, and on Facebook, she shared a moment from their meeting.