Bob and Mike Bryan beat Mikhail Youzhny and Dmitry Tursunov in the doubles to enable the United States pull back 1-2 in their Davis Cup semi-final against Russia.
The two players were named as the top seeds for the men's and women's singles event at the Australian Open which starts on Monday.
Australia's Lleyton Hewitt dispatched Argentine Gaston Gaudio 6-2, 6-1 to clinch his place in the Masters Cup semi-finals.
The duo were trailing 5-4 in the first set against American brothers Bob and Mike Bryan when rains disrupted their Masters Cup tennis match.
World number one Roger Federer breezed through to the Halle Open semi-finals with a 6-3, 6-4 win over Germany's Philipp Kohlschreiber.
The ATP will meet with the breakaway tennis players' union to thrash out the future of the sport.
But fellow Argentines Gaston Gaudio and the indefatigable Guillermo Coria won in straight sets as did Russian Marat Safin
The world No.1 shrugged off sweltering conditions beat Olivier Rochus in the second round of the Nasdaq-100 Open.
The defending champion is on collision course with Lleyton Hewitt, the man whose title he took.
List of Australian Open men's singles champions since the event began in 1905 (Australian unless stated):
World number one and defending champion Roger Federer won an epic 20-18 tie-break to seal a 6-3, 7-6 win over Marat Safin and place in the Masters Cup final.
GM Pavel Kotsur of Kazakhstan and Saidali Iuldachev of Uzbekistan maintained their joint lead after the eighth round of the Parsvanath International Chess tournament.
The world number one repeated his Australian Open final victory over Marat Safin with a 7-6, 7-6 win to reach the second round of the Dubai Open.
World number one Roger Federer will meet second seed Andy Roddick in the final of the Thailand Open after both claimed three-set victories.
Marat Safin and Mikhail won the doubles to give Russia a 3-0 lead in their Davis Cup World Group playoff tie.
Kim Clijsters beat Dinara Safina, while Mary Pierce downed Tatiana Golovin in the semi-final of the Paris Open.
Spain's Feliciano Lopez sent the Australian ninth seed spinning out of the Madrid Masters on a night of surprises.
Earning his fourth straight win over a top-10 player this week, Khachanov, whose muscular game resembles that of his childhood hero Marat Safin, a Russian three-times winner in Paris, picked up the biggest title of his burgeoning career.
Japan Warriors did not have to break much sweat in getting past Philippine Marvericks 29-15 but it was a tough day out for UAE Royals, who edged out hosts Singapore Slammers 27-23 in their IPTL match, riding on Roger Federer's win in the deciding men's singles, in Singapore on Friday.
Rafael Nadal will play for the Indian side in the second edition of the International Premier Tennis League.
Serbia's Novak Djokovic, who beat Switzerland's Roger Federer to win his 16th Grand Slam title on Sunday:
Change might be afoot though, according to American great John McEnroe
Carlos Moya is fit, in form and utterly convinced he is now a better all-round player than when he won the French Open as a fearless 21-year-old back in 1998
A summary of Novak Djokovic's rise in the tennis circuit in photos.