World’s best set for London showdown November 12-19, O2 Arena Round robin: Players drawn into two groups of four. Top two players in each group advance to semi-finals Pete Sampras Group Rafael Nadal ESP Win / loss 2017: 67-10 Titles 2017: 6 Year-end World No.1 for first time since 2013 after Roland Garros and U.S Open titles Dominic Thiem AUT Win / loss: 48-25 Titles: 1 Second appearance. Aims to improve hard court form after struggling on surface this season Grigor Dimitrov BUL Win / loss: 44-19 Titles: 3 Secured first Tour Finals berth with titles in Sofia, Brisbane, and maiden Masters win in Cincinatti David Goffin BEL Win / loss: 54-22 Titles: 2 Strong finish to season – breaking into Top 10 with successive titles in Shenzhen and Tokyo Boris Becker Group Roger Federer SUI Win / loss: 49-4 Titles: 7 Australian Open and Wimbledon champion hoping to claim 7th Tour Finals crown Alexander Zverev GER Win / loss: 54-20 Titles: 5 Career-high rank after stellar season – captured maiden Masters titles in Rome and Montreal Marin Cilic CRO Win / loss: 44-19 Titles: 1 Wimbledon finalist excels on fast courts and hopes to better disappointing round robin exit of 2016 Jack Sock USA Win / loss: 36-19 Titles: 3 Finals debut after three titles, including Paris Masters, helped secure last berth in London Source: ATP Data correct as of Nov 8 Pictures: Getty Images © GRAPHIC NEWS