On a day of upsets at the Pacific Life Open, Australian Open runner-up Marcos Baghdatis beat 7th seed Gaston Gaudio.
Haas had earlier defeated Russia's Mikhail Youzhny with an identical 6-4, 6-3 score.
Somdev Devvarman scored a comfortable victory over Germany's Denis Gremelmayr to enter the second round in the ATP Legg Mason Classic in Washington on Tuesday. The Indian ace won 6-2, 6-3 in just under an hour.
Novak Djokovic's run of 17 successive Tour finals came to a grinding halt when he was forced out of the Dubai Open on Thursday.
Agnieszka Radwanska continued her pre-Wimbledon tune-up by reaching the final of Eastbourne grasscourt tournament with a 6-1, 6-7(3), 6-2 win over America's Sloane Stephens on Friday.
Even after 20 Grand Slam titles, the tears gushing down Roger Federer's cheeks after winning his sixth Australian Open crown on Sunday showed the competitive fires still rage within the 36-year-old Swiss.
Top seeded Argentine Juan Martin del Potro moved a step closer to the successful defense of his Swiss Indoors title when he beat Marcos Baghdatis 6-1, 6-2 for a third time this season.
Tomas Berdych swept aside American Jack Sock to make it two Stockholm Open titles in a row, winning Sunday's final 7-6(1), 6-2 in the Swedish capital.
Rohan Bopanna and Daniel Nestor went through several anxious moments before making it to the second round, even as Mahesh Bhupathi and Jurgen Melzer failed to, in the men's doubles at the Australian Open, in Melbourne, on Thursday.
Yuki Bhambri struggled to rein in his unforced errors and played well only in patches as his third Australian Open appearance ended with a straight-set first-round defeat at the hands of a seasoned Marcos Baghdatis, in Melbourne on Monday.
Flavia Pennetta, Italy's newly-crowned US Open women's singles champion, will represent Mumbai Masters in this year's Champions Tennis League along with 1996 Wimbledon men's champion Richard Krajicek of the Netherlands following the players' draft, in Mumbai, on Wednesday. The second edition of the Champions Tennis League, the brainchild of former India Davis Cup captain Vijay Amritraj, will be played from November 23 to December 6, an increase of four days from last year's ten-day duration, announced Amritraj at a media conference after the players' draft.
Pune Marathas made a remarkable recovery from 0-2 down to win their next three matches in a row as their contest against Bangalore Raptors ended in a thrilling tie to run away with a bonus point in the Champions Tennis League on Thursday.
Garbine Muguruza claimed a 6-4, 7-6(3), 7-5 win over Johanna Konta
Lucas Pouille crowned a glorious French charge at the U.S. Open on Sunday by ousting 14-times grand slam singles winner Rafa Nadal in a five-set thriller. The 22-year-old Pouille, seeded 24th, won a deciding tiebreak 8-6 to complete a 6-1 2-6 6-4 3-6 7-6(6) marathon victory and join compatriots Jo-Wilfried Tsonga and Gael Monfils into the last eight at Flushing Meadows.
Photos from matches played at the US Open in Flushing Meadows on Sunday
Top seed Serena Williams dropped the second set before bouncing back to beat compatriot Christina Mchale 6-3, 5-7, 6-2 in second-round action at the Miami Open in Florida on Thursday.
Marin Cilic became the first Croatian to win a Grand Slam singles final in 13 years with his victory at the US Open in New York on Monday.
Rohan Bopanna and his new German partner Andre Begemann knocked out the top seeded pair of Alexendra Peya and Bruno Soares to storm into the quarter-finals of the ATP 500 Citi Open in Washington.
Stan Wawrinka reached his second final of the season as Nick Kyrgios retired injured from their semi-final at the ATP Dubai Championships on Friday. The Australian quit due to back pain while trailing 6-4, 3-0, having had on-court treatment after the seventh game of the opening set. Wawrinka now moves into position for a possible second trophy of the season after winning in Chennai to start the year. The French Open champion will face either sixth seed Feliciano Lopez, who advanced in the quarter-finals when Novak Djokovic was unable to continue due to an eye infections or former Australian Open finalist Marcos Baghdatis. Wawrinka, ranked fourth, carries an enviable record into the Saturday title match at the Aviation Club, having won his last eight finals.
Impressive wins by world number six Agnieszka Radwanska and seasoned Marcos Baghdatis paved the way for Pune Marathas's close 26-25 victory over Hyderabad Aces in the Champions Tennis League (CTL) at the LB Stadium on Tuesday.
It will motivate him to keep working hard and move to the top 100, feels India's Davis Cup captain Mahesh Bhupathi
The unheralded Ramkumar, ranked 222 in the world, brushed aside the Austrian's challenge 6-3, 6-2 in only 59 minutes to make it to the last eight of the $439,000 prize-money tournament.
Andy Murray has set up a mouth-watering clash with Grigor Dimitrov and a chance to avenge his defeat at Wimbledon after hammering Portugal's Joao Sousa 6-1, 6-1, 7-5 to reach the fourth round of the Australian Open in Melbourne, on Friday.
Kirsten Flipkens led India Aces to a tight one-point win over defending champions Singapore Slammers with her decisive victory over Kiki Bertens in the do-or-die women's singles clash in IPTL, in Tokyo on Saturday.
Swiss tennis maestro Roger Federer stepped up his bid for a record ninth Halle grasscourt title with a straight sets victory over Germany's Jan-Lennard Struff in the opening round on Wednesday.
His early tennis experiences were at the shell-ravaged Zetra Olympic Hall which was used as a temporary morgue during the war.
A summary of sports events and sports persons, who made news on Monday
A summary of sports events and sports persons, who made news on Friday
The franchise-based Champions Tennis League, which will begin its second season next month, will help end India's search for quality singles players, its promoter and former Davis Cupper Vijay Amritraj said.
Roger Federer was made to work hard by Fernando Verdasco before beating the Spanish veteran 6-3, 3-6, 6-3 on Wednesday to reach the quarter-finals of the Dubai Duty Free Tennis Championships.
Teenager Taylor Fritz earned the chance to face his hero Roger Federer after the American defeated an unranked French qualifier on Tuesday to reach the second round in Stuttgart. Federer will be playing his first match in nearly a month after recovering from back pain and skipping the French Open, as he ramps up his preparations for Wimbledon. Number 65 Fritz has had time on court with the Swiss legend -- a Wimbledon training session a year ago - but booked his place into the match of his life with a 3-6 7-6 (8/6) 6-1 win over Fabrice Martin on the grass at the Weissenhof Club. Fritz, 18, said he will not worry with nerves when he faces one of the best players on the planet. "I have nothing to lose, there is no pressure on me, I don't think there will be any nerves." The teenager said he had watched and admired Federer as a boy aged 11.
Juan Martin del Potro continued his encouraging buildup to the Australian Open by reaching the semi-finals of the Sydney International on Thursday, but women's contender Petra Kvitova was stunned by a Bulgarian qualifier in the last four.
Fourth seed Andy Murray erased memories of early losses at Indian Wells by storming into the BNP Paribas Open third round with a ruthless 6-1, 6-3 victory over Canadian Vasek Pospisil on Saturday.
The 21-year-old German, one of the brightest stars in men's tennis, is yet to progress beyond the quarter-finals at a Grand Slam.
The Australian Open has seen many unheralded players punching above their weight. Rediff.com takes a look at a few such unseeded players who went the distance in the new millennium.
IMAGES from the matches played on Day 2 of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on Tuesday.
Roger Federer avoided any more security scares as he moved smoothly into the third round of the French Open on Wednesday but danger still lurks in the bottom half of the draw, namely in the shape of Japan's Kei Nishikori.
'Everyone always talks about how hot Melbourne is but the US Open's way worse'