Metro Urban Tennis is a twist on mini-golf in which participants score points by hitting tennis balls against and into different targets within a cityscape environment.
Each player has three attempts to get the highest possible score and can also see how their performance measures up to that of tennis legend Greg Rusedski, who posted his score on Sunday (20 November).
Pat Cash and Tim Henman will also try their hands during special appearances later this week.
Visitors to the tournament can enter a prize draw to win a VIP experience to see John McEnroe take on Ivan Lendl during the AEGON Masters Tennis at the Royal Albert Hall, taking place in December.
Flourish creative director Guy Tremlett said: "Urban Tennis provides Metro with a fun, engaging mechanic to interact with visitors to the O2, and the iconic city landscapes within the environment serve to reinforce its position as the commuter’s favourite free newspaper."
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