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Great Britain's Jamie Murray (right) and partner Brazil's Bruno Soares during their doubles match on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

Great Britain's Jamie Murray (right) and partner Brazil's Bruno Soares during their doubles match on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

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Great Britain's Jamie Murray during his doubles match with partner Brazil's Bruno Soares on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

Great Britain's Jamie Murray during his doubles match with partner Brazil's Bruno Soares on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

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Great Britain's Jamie Murray (left) and partner Brazil's Bruno Soares during their doubles match on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

Great Britain's Jamie Murray (left) and partner Brazil's Bruno Soares during their doubles match on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

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Great Britain's Jamie Murray (left) during his doubles match with partner Brazil's Bruno Soares on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)

Great Britain's Jamie Murray (left) during his doubles match with partner Brazil's Bruno Soares on day six of the NITTO ATP World Tour Finals at the O2 Arena, London. (Photo by Adam Davy/PA Images via Getty Images)