Roger Federer will beat world No . 1 Novak Djokovic in final of season - ending tournament . Federer will seek a record-extending seventh title , and bid to match the last man to have won it three years in a row -- Murray 's coach Ivan Lendl . Defending champion Federer beats world No . 3 Andy Murray in Sunday 's semifinal . Federer will be seeking a record - breaking seventh title , and his third in a row . Djokovic beats Juan Martin del Potro to reach final for second time , his first in London .
Roger Federer will beat world No . 1 Novak Djokovic in final of season - ending tournament . Defending champion Federer beats world No . 3 Andy Murray in Sunday 's semifinal . Federer will be seeking a record - breaking seventh title , and his third in a row . Djokovic beats Juan Martin del Potro to reach final for second time , his first in London .