RAFAEL NADAL

Federer was playing in his second match as he returned from injury after a six-month gap.

Nadal played his first game on the ATP tour after cutting his 2016 season short in October.

Murray is building up to 2017 by taking part in the MWTC in Abu Dhabi.

Rafael Nadal has missed 30 months of his career due to injury.

Nadal cut his 2016 season short a month early owing to wrist injury problems.

The big four – Roger Federer, Rafael Nadal, Novak Djokovic and Andy Murray – have dominated the ATP tour for more than a decade.

Nadal is expected to make his first competitive appearance at the MWTC in Abu Dhabi.

Djokovic has won 12 Grand Slam titles thus far in his career.

Federer cut short his 2016 season following his semi-final loss to Raonic at Wimbledon.

Nadal ended his 2016 season in October owing to wrist injury problems.

Nadal is expected to play in the Mubadala World Tennis Championship in Abu Dhabi.

Murray eclipsed Djokovic as the number one ranked men's singles player at the Paris Masters.

Moya played a big part in the rise of Milos Raonic on the world stage.

Nadal is playing doubles with Marc Lopez at the Spanish Championships.

Becker believes that Murray will have his work cut out in 2017.

Kyrgios is currently serving an eight-week ATP ban for tanking at the Shanghai Masters.

Nadal is currently playing at the Spanish National Championship in the doubles category.

Murray was recently voted as the UK's greatest sportsperson ever.

Federer last won a Grand Slam in 2012 while Nadal's last major triumph was in 2014.

Murray's achievement can be attributed to the return of his coach Ivan Lendl.

Kyrgios is currently taking part in the IPTL event in Singapore.