Decade-old record previously set by Belgian Kim Clijsters and Serena Williams is smashed.
Spain are indebted to world No 1 as he continues hunt for a 5th Davis Cup crown.
British Andy Murray will face winner of Spain against Argentina in semis.
Team lost Nick Kyrgios to collarbone injury after playing 3 nights in a row.
29-year-old joins forces with Denis Shapovalov to take doubles rubber match, will face Serbia or Russia in semis.
Britain captain Leon Smith left out 3-time Grand Slam champion as he had tough game the day before.
Challenge of fitting in 6 ties a day proving almost impossible for organisers.
Originally scheduled for September, the Asia/Oceania Group I match will now be played on Nov 29-30.
Scotsman came from a set down to beat Dutchman Tallon Griekspoor in opening match.
Swiss legend ranked 3rd in the world behind Rafa Nadal and Novak Djokovic.
Stadiums were far from full but Spanish ace enjoyed bumper crowd of local fans.
Greek 21-year-old comes back from set down to beat Dominic Thiem and become youngest champion in 18 years.
One of her 2020 goals is to make a second consecutive appearance for Team USA at the Olympics.
Greek youngster hopes to one day be as popular as Swiss great.
Tsitsipas earlier ended Roger Federer's hopes of securing a 7th year-end title.
Spaniard denied place in ATP Finals semis by young German Alex Zverev.
Nadal never won ATP Finals but secures year-end No 1 ranking.
Swiss star cruised past Serbian Wimbledon conqueror.
German, however, appears to be caught red-handed by TV cameras.
Greek star will get a chance to eliminate world No 1 when they square off on Friday.
Austrian records stunning victory to book semifinal spot at ATP Finals.
Belgian delayed her comeback in January after suffering a knee injury.
32-year-old still believes he can beat top players.
Spanish ace was taken down in straight sets.