Embed from Getty Images Djokovic, Zverev Win Opening Matches at ATP World Tour Finals (November 12, 2018) Year-end No. 1 Novak Djokovic opened round robin play in the Guga Kuerten Group at the ATP World Finals in London with a 6-4, 6-3 win over John Isner. The American Isner, at 33 is making his debut at the Year-End Championships. “I got my a** kicked,” Isner said. “That … [Read more...] about Djokovic, Zverev Win Opening Matches at ATP World Tour Finals