Novak Djokovic led Serbia to the quarter-finals of the inaugural ATP Cup by winning both his singles and doubles matches against group rivals France.
After France led through Benoit Paire's win over Dusan Lajovic, world number two Djokovic beat Gael Monfils 6-3 6-2.
Djokovic and Viktor Troicki beat Nicolas Mahut and Edouard Roger-Vasselin to win 6-3 6-7 (5-7) 10-3 at 00:40 local time in Brisbane.
Rafael Nadal's Spain beat Uruguay to close on the last eight in Australia.
After world number 10 Roberto Bautista Agut thrashed Franco Roncadelli 6-1 6-2, world number one Nadal eased past Pablo Cuevas 6-2 6-1 to seal the Perth tie before Feliciano Lopez and Pablo Carreno Busta beat Ariel Behar and Juan Martin Fumeaux 6-1 3-6 10-3 in the doubles.