who is retiring after playing in the Davis Cup this month, was the runner-up twice at the ATP Finals but never won it. Not since 2001 has the tournament been held without at least one of Djokovic, Federer or Nadal. This season also was the first since 2002 ...

Djokovic has won the ATP Finals, which is the end of year tournament somewhat seen as a fifth major, a record seven times. He won the title last year, beating current World No. 1 Jannik Sinner.

The seven-time ATP Finals champion Novak Djokovic will not compete in Turin next week, skipping the premium ATP event. Unlike the veteran, last year's finalist Jannik Sinner is eager to embrace battles against the world's best players,