Great Britain v Australia Davis Cup Semi Final 2015 - Day 2 [Getty Images]

GLASGOW, UNITED KINGDOM - SEPTEMBER 19: Jamie Murray of Great Britain returns a shot against Sam Groth of Australia during day 2 of the Great Britain v Australia Davis Cup Semi Final 2015 at the Emirates Arena on September 19, 2015 in Glasgow, United Kingdom. (Photo by Steve Welsh/Getty Images)

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