Image:This fan was prepared to do whatever it took to sit beside Jose Mourinho at the O2 Arena
Image:...as was Mollie King of the Saturdays
Image:One Director star Niall Horan was spotted at Wimbledon last summer, and he was in attendance for day two of the ATP World Tour Finals...
Image:While Horan's One Direction bandmate Liam Payne took in Andy Murray's win over Milos Raonic
Image:Pippa Middleton was cheering on Andy Murray during his must-win meeting with Roger Federer, but the British No 1 crashed to a comprehensive defeat
Image:Sky Sports even asked the Chelsea boss for some words of advice during Andy Murray's opening round defeat to Kei Nishikori
Image:Arsenal stars Mathieu Debuchy and Olivier Giroud took advantage of the international break to watch Novak Djokovic play Stan Wawrinka
Image:English actor Sir Ian McKellen got caught up in the excitement during the doubles final
Image:Comedian Jimmy Carr looked to be enjoying the action
Image:Mel B took a break from X-factor duties to watch the evening session on day six
Image:Colombian footballers Juan Guillermo Cuadrado, Carlos Bacca, Jackson Martinez, and James Rodriquez were in attendance for the semi-finals
Image:Cuadrado takes a picture of the all-Swiss clash between Roger Federer and Stan Wawrinka
Image:Roger Federer was forced to withdraw from the final against Novak Djokovic due to injury
Image:So Andy Murray stepped in play an exhibition with Djokovic
Image:And Murray also entertained the crowd with an unorthodox 'doubles' match with former stars John McEnroe, Tim Henman and Pat Cash
Image:Once McEnroe returned to the right side of the net, he and Murray ran out 6-2 winners