The 25-year-old Sock, who will make his singles debut at the elite eight-player event, started the final week of the regular 2017 ATP World Tour season at No. 24 in the Emirates ATP Race To London and qualified with his first ATP World Tour Masters 1000 crown. The last time a player secured his Nitto ATP Finals berth by needing to win the Paris title was Jo-Wilfried Tsonga in 2008.
The American’s qualification means that eight different countries are represented at the Nitto ATP Finals for the second successive year. Sock joins World No. 1 Rafael Nadal, six-time Swiss champion Roger Federer, debutants Alexander Zverev, Grigor Dimitrov and David Goffin of Belgium, and former qualifiers Austria’s Dominic Thiem and Croatia’s Marin Cilic.
“There have been a lot of firsts,” said Sock. “It started at the French Open with my first fourth round of a Slam, now I’ve won my first Masters 1000 in Paris, this will be my first time in the Top 10 and this will be the first time making the year-end [Nitto ATP] Finals. So there’s a lot going on right now emotionally and I can’t wait to enjoy it all with my team.”
Sock is the first American to secure a berth at the season finale since Mardy Fish in 2011.