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Britain's Andy Murray (L) plays a shot on a practice court as his Czech-US coach Ivan Lendl (R) watches at The All England Tennis Club in Wimbledon, southwest London, on June 26, 2016, on the eve of the start of the 2016 Wimbledon Championships tennis tournament. / AFP / ADRIAN DENNIS / RESTRICTED TO EDITORIAL USE (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)

Britain's Andy Murray (L) plays a shot on a practice court as his Czech-US coach Ivan Lendl (R) watches at The All England Tennis Club in Wimbledon, southwest London, on June 26, 2016, on the eve of the start of the 2016 Wimbledon Championships tennis tournament. / AFP / ADRIAN DENNIS / RESTRICTED TO EDITORIAL USE        (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)