Roger Federer will aim to finish an off key year on a high note by winning a record sixth title at the ATP World Tour finals, which gets underway in London on Sunday night.
The world number four, who opens round robin action in the defence of his crown on day one against dangerous Frenchman Jo-Wilfried Tsonga, is level in the season-ending tournament's roll of honour with Ivan Lendl and Pete Sampras.
Despite being the oldest player in the eight-man draw, and arriving with his lowest ranking since 2003, few would bet against the Swiss 16-times grand slam champion supplying a show-stopping end to a year dominated by Serbia's Novak Djokovic.
Spanish world number two Rafael Nadal begins his campaign against US number one Mardy Fish.
