(CNN) -- For most of the year London's O2 Arena, located on the south bank of the famous River Thames, plays host to the world's biggest music acts. But since 2009, the venue has also spent one week in November staging tennis' season-ending showpiece -- the ATP World Tour Finals. The event pits the world's top eight male tennis players and doubles pairings against each other in a round-robin contest, with an unbeaten winner pocketing a check for $1.63 million. But before the elite of the game can do battle on the court, the O2 must be transformed from a concert venue to a world-class tennis facility. That's where World Tour Finals tournament director Chris Kermode and his team come in.
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Since 2009, London's O2 Arena has hosted the ATP World Tour Finals
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The event is played out between world's top-ranked male singles and doubles stars
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The O2 is predominantly a music venue, playing host to artists like Rihanna
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The O2 Arena's deal to host season-ending event runs until 2013
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