Croatia's Borna Coric had his best season yet in 2018.

Novak Djokovic and Damir Dzumhur relax after practising at The Queen's Club in London.

Sebastien Grosjean, Tennys Sandgren, Michael Kosta, Kevin Anderson, Shelby Rogers and Eugenie Bouchard help raise money at Kevin Anderson's Grand Slam Cause for the Paws.

Tennys Sandgren, Kevin Anderson, Bob Bryan and Mike Bryan help raise more than $100,000 for charity.

Nick Kyrgios meets Loga Gandhi, her father Pari Gandhi, mother Sankari Kalaiselvan and brother Aylione Gandhi in Canberra on Saturday.

Frances Tiafoe, after reaching just his second tour-level quarter-final, goes on to win his maiden title in Delray Beach.

Rudolf Molleker celebrates his maiden ATP Challenger Tour title in Heilbronn, becoming the youngest champion of the 2018 season.

Grigor Dimitrov will look to return to the Top 10 in 2019.

Roger Federer took time to visit school children during a trip to Zambia.

Boris Becker and Alexander Zverev are the past two players from Germany to win the Nitto ATP Finals.

Boris Becker and Alexander Zverev are the past two players from Germany to win the Nitto ATP Finals.

Tommy Haas announces his retirement on 15 March 2018 at the BNP Paribas Open, where he is the Tournament Director.

Juan Martin del Potro, Rafael Nadal and Novak Djokovic stood out on different surfaces in 2018 according to the FedEx ATP Performance Zone.

Matthew Stockman shoots an image of Roger Federer swooping into net for a forehand volley in Indian Wells.

Kei Nishikori, after starting his season on the ATP Challenger Tour, finished the year at the Nitto ATP Finals.

Grigor Dimitrov battles to stay in a point against Dennis Novak during a first-round win at the Australian Open. Photo: Clive Brunskill.Getty Images

Stefanos Tsitsipas registered a historic run of upsets at the Rogers Cup in Toronto.

Rafael Nadal led the Top 10 in six key serve and return categories in 2018, according to Infosys ATP Scores & Stats.

This year, John Isner led the ATP World Tour in service games won, aces and second-serve points won.