Watch highlights of the historic first day of play at the Next Gen ATP Finals in Milan, as Daniil Medvedev, Hyeon Chung, Borna Coric and Andrey Rublev won their first matches of the tournament. Watch the Next Gen ATP Finals LIVE on Amazon Prime Video: www.primevideo.com/ATP. Photo Credit: Peter Staples/ATP World Tour

Highlights Historic Day In Milan Puts Exciting NextGen ATP On Full Display