NEW YORK, NY - MARCH 06: Kei Nishikori of Team World returns a shot during his Mixed Double‘s match against Venus Williams and Juan Martin del Potro (not pictured) of Team Americas during the BNP Paribas Showdown at Madison Square Garden on March 6, 2017 in New York City. Elsa/Getty Images/AFP == FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY == <저작권자(c) 연합뉴스, 무단 전재-재배포 금지>