Novak Djokovic has all but secured the year-end world No 1 in the ATP rankings after defeating Borna Coric at the Erste Bank Open in Vienna on Wednesday.
The Serb reached the quarter-finals after coming through against Coric 7-6 (13-11) 6-3. He will end 2020 as world number one as long as Rafael Nadal does not take a wild card as a late entry into the Sofia Open next month.
However, should Djokovic win the title on Sunday, he will take top spot regardless of whether or not Nadal plays Sofia.
“Borna is a great fighter, a very good friend of mine,” said Djokovic. “He has a similar style. He was serving very well specially in the first set, very tough to break him.
“The tie-break again, like yesterday against (Filip) Krajinovic, decided the match, I guess. I am just really glad to stay focused and play my best at the right time.”
Third-seeded Stefanos Tsitsipas rallied to defeat Jan-Lennard Struff 6-7 (3-7) 6-3 6-4 and set up a meeting with Grigor Dimitrov, while No 4 Daniil Medvedev advanced with a 6-3 6-1 win over Jason Lung.
Medvedev next plays Vasek Pospisil, who beat Canadian countryman Felix Auger-Aliassime 7-5 7-5.
Also, young Italian star Jannik Sinner defeated Caspar Ruud 7-6 (7-2) 6-3 to set up a clash against Andrey Rublev.