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SYDNEY, AUSTRALIA - SEPTEMBER 16: Nick Kyrgios of Australia has his nose plugged by medical staff due to a nose bleed in his singles match against Andrej Martin of Slovakia during the Davis Cup World Group playoff between Australia and Slovakia at Sydney Olympic Park Tennis Centre on September 16, 2016 in Sydney, Australia. (Photo by Matt King/Getty Images)

SYDNEY, AUSTRALIA - SEPTEMBER 16:  Nick Kyrgios of Australia has his nose plugged by medical staff due to a nose bleed in his singles match against Andrej Martin of Slovakia during the Davis Cup World Group playoff between Australia and Slovakia at Sydney Olympic Park Tennis Centre on September 16, 2016 in Sydney, Australia.  (Photo by Matt King/Getty Images)