Welcome to Standard Sport's LIVE coverage of the the ATP Finals as the world's top-ranked players battle it out for the final prize of the calendar year.
The tennis season’s grand finale returns to London for an 11th straight year as the O2 Arena stages the climax to the 2019 season.
Five-time ATP Finals champion Novak Djokovic is again the favourite, and the Serb got off to a fine start this afternoon with victory over Italy's Matteo Berrettini in just over an hour.
Roger Federer, who is 5/1 to win a seventh ATP Finals crown, has not won the season finale since 2011, and opens his tournament against Dominic Thiem this evening.
We'll bring you live coverage of today's action, plus the results and schedule from the rest of the tournament
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Schedule and results
Sunday, November 10
Centre Court, play begins at 12 noon
Result: [4] R. Ram (USA) / J. Salisbury (GBR) 3-6, 4-6 R. Klaasen (RSA) / M. Venus (NZL) [5]
Not before 2pm
Result: [2] N. Djokovic (SRB) 6-2, 6-1 M. Berrettini (ITA) [8]
Not before 6pm
[2] L. Kubot (POL) / M. Melo (BRA) 4-6, 6-4, 10-5* I. Dodig (CRO) / F. Polasek (SVK) [8] *final set tiebreak
Not before 8pm
[3] R. Federer (SUI) vs D. Thiem (AUT) [5]
