The Greek said he felt better than he expected to on court but not perfect.
What do the rising forces in the game think about their chances of breaking through at the majors in 2020?
Grigor Dimitrov is both captain and player for Bulgaria's ATP Cup squad.
Nick Kyrgios pledges $200 for each ace he hits to victims of bush fires.
Two-time Roland Garros runner-up sees big breakthrough in 2020.
Five-time Grand Slam champion joins loaded field for Brisbane International.
World No. 1 rings in New Year with Spanish teammates.
