MILAN, ITALY - NOVEMBER 07: Hyeon Chung of South Korea (L) poses with Denis Shapovalov of Canada during Day 1 of the Next Gen ATP Finals on November 7, 2017 in Milan, Italy. (Photo by Emilio Andreoli/Getty Images)
MILAN, ITALY - NOVEMBER 07: Denis Shapovalov of Canada looks on in his match against Hyeon Chung of South Korea during Day 1 of the Next Gen ATP Finals on November 7, 2017 in Milan, Italy. (Photo by Emilio Andreoli/Getty Images)
MILAN, ITALY - NOVEMBER 07: Hyeon Chung of South Korea serves the ball in his match against Denis Shapovalov of Canada during Day 1 of the Next Gen ATP Finals on November 7, 2017 in Milan, Italy. (Photo by Emilio Andreoli/Getty Images)
MILAN, ITALY - NOVEMBER 07: Denis Shapovalov of Canada gestures in his match against Hyeon Chung of South Korea during Day 1 of the Next Gen ATP Finals on November 7, 2017 in Milan, Italy. (Photo by Emilio Andreoli/Getty Images)
MILAN, ITALY - NOVEMBER 07: Hyeon Chung of South Korea returns a forehand in his match against Denis Shapovalov of Canada during Day 1 of the Next Gen ATP Finals on November 7, 2017 in Milan, Italy. (Photo by Emilio Andreoli/Getty Images)
