![Grigor Dimitrov is looking to improve in 2018 after opening his ATP Finals campaign with a win | Tennis News | Sky Sports Grigor Dimitrov is looking to improve in 2018 after opening his ATP Finals campaign with a win | Tennis News | Sky Sports](https://e0.365dm.com/17/11/768x432/skysports-dimitrov-tennis-atpfinals_4154824.jpg?20171113162330)
Grigor Dimitrov is looking to improve in 2018 after opening his ATP Finals campaign with a win | Tennis News | Sky Sports
![11th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Roger Federer (SUI) plays a forehand shot in his match against Kei Nishikori (JPN Stock Photo - Alamy 11th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Roger Federer (SUI) plays a forehand shot in his match against Kei Nishikori (JPN Stock Photo - Alamy](https://c8.alamy.com/comp/R1DEGC/11th-november-2018-o2-arena-london-england-nitto-atp-tennis-finals-roger-federer-sui-plays-a-forehand-shot-in-his-match-against-kei-nishikori-jpn-R1DEGC.jpg)
11th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Roger Federer (SUI) plays a forehand shot in his match against Kei Nishikori (JPN Stock Photo - Alamy
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O2 Arena, London, UK. 16th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Pierre-Hugues Herbert (FRA) with an overhead smash at the net with his doubles partner Nicolas Mahut (FRA)
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16th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Novak Djokovic (SRB) plays a forehand shot in his match against Marin Cilic (CRO Stock Photo - Alamy
![O2 Arena, London, England, UK, 13th November 2018. Nitto ATP Tennis Finals; Roger Federer (SUI) throwing his sweat band towards the fans in celebration after defeating Dominic Thiem (AUT) by 2-0 sets O2 Arena, London, England, UK, 13th November 2018. Nitto ATP Tennis Finals; Roger Federer (SUI) throwing his sweat band towards the fans in celebration after defeating Dominic Thiem (AUT) by 2-0 sets](https://c8.alamy.com/comp/R1K2YH/o2-arena-london-england-uk-13th-november-2018-nitto-atp-tennis-finals-roger-federer-sui-throwing-his-sweat-band-towards-the-fans-in-celebration-after-defeating-dominic-thiem-aut-by-2-0-sets-credit-action-plus-sports-imagesalamy-live-news-R1K2YH.jpg)
O2 Arena, London, England, UK, 13th November 2018. Nitto ATP Tennis Finals; Roger Federer (SUI) throwing his sweat band towards the fans in celebration after defeating Dominic Thiem (AUT) by 2-0 sets
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O2 Arena, London, UK. 16th November 2018, O2 Arena, London, England; Nitto ATP Tennis Finals; Nicolas Mahut (FRA) with a forehand shot at the net with his doubles partner Pierre-Hugues Herbert (FRA)
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London, UK. 15th November 2018, The O2 , London, England; Nitto ATP World Tour Finals; Roger Federer of Switzerland in action during their match against Kevin Anderson of South African Credit: Romena
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