2017 Next Gen ATP Finals
The 2017 Next Gen ATP Finals was a men's exhibition tennis tournament played in Milan, Italy, from 7 to 11 November 2017. It was the season-ending event for the best singles players who were age 21 and under on the 2017 ATP World Tour.
Chung Hyeon defeated Andrey Rublev in the final, 3–4, 4–3, 4–2, 4–2 to capture the 2017 Next Gen ATP Finals title.
Rules
A number of innovative rule changes were introduced in 2017 including best of five sets, first to four games in each set, tie break at 3-All, no-ad scoring and no lets. There were amended rules regarding time, the match started five minutes from entry of second player onto court, a shot clock to ensure 25 second rule, a maximum of one medical timeout per player per match, limits on when coaches can talk to players and the public was allowed to move around during a match.In September 2017, the ATP announced that there would be no line judges at the event. The only official on court was the umpire and all line calls were made by Hawk-Eye. All calls were therefore final; however, foot faults, which are usually called by the baseline official, could be challenged and would be reviewed by a camera monitoring the server's feet.
Qualification
The top seven players in the Emirates ATP Race to Milan qualified. The eighth spot was reserved for an Italian wild card, determined at a qualifying tournament. Eligible players must be 21 or under at the start of the year. 18-year-old Denis Shapovalov was the youngest and only teenage player.Alexander Zverev withdrew from the tournament, as he would play the ATP Finals the following week.