Olympic champion Serena Williams suffered her first loss in nearly three months on Friday as she was knocked out of the Cincinnati Open quarter-finals, falling 6-4, 6-4 to Germany's Angelique Kerber.
World number one Victoria Azarenka stretched her unbeaten run to 24 matches this year while Venus Williams ousted Wimbledon champion Petra Kvitova at the Sony Ericsson Open in Miami on Friday.
Outfits worn by women tennis players at the Australian Open,
Bollettieri founded the Nick Bollettieri Tennis Academy in 1978. It was bought by the International Management Group in 1987.
IMAGES from matches played at the Miami Masters in Key Biscayne, Florida
Reigning champions Novak Djokovic and Serena Williams have been named top seeds for the Australian Open starting on Monday.
Germany's Angelique Kerber said she felt confident about facing Serena Williams in Saturday's Wimbledon final after beating the world number one in Australia earlier this year, and warned: I'm even more dangerous on grass. The fourth seed gatecrashed the Williams sisters' Wimbledon party when she overpowered Venus 6-4 6-4 in the semi-finals on Thursday, setting up the clash with Serena.
Venus and Serena Williams kept up their semi-final date with commanding victories over Vera Zvonareva and Anastasia Rodionova respectively at the WTA Tier II Bangalore Open on Friday. Venus won 6-4, 6-3, while Serena was through at 6-1, 6-4.
Images from the matches being played at the Australian Open, Day Three
The American has been out of action since March with a shoulder problem.\n
World No 1 Serena Williams breezed past older sister Venus 6-1, 6-2 in their first meeting since 2009 in the semi-finals of the Family Circle Cup in Charleston, South Carolina on Saturday.
Tennis players and venues stick to strict guidelines aimed at minimising health risks.
Top seed Justine Henin of Belgium battled past two-times champion Venus Williams while fourth Russian Svetlana Kuznetsova beat compatriot Anna Chakvetadze in the semi-finals.
Indian ace Sania Mirza grabbed the last spot to be seeded 32nd at the Wimbledon championhips.
Sport's most enduring sibling rivalry will be played out on US. Independence Day after Venus Williams exacted brutal revenge and Serena Williams displayed raw desire to inflict a double defeat on Russia at Wimbledon.
Serena Williams stayed on course to end the year as world number one when she beat Russia's Svetlana Kuznetsova 7-6, 7-5 on the opening day of the WTA Championships after sister Venus suffered a shock defeat on Tuesday.
Photos from matches on Day 2 at the Australian Open on Tuesday
World number one Roger Federer overcame a sluggish start before advancing to the Australian Open semi-finals with a 2-6, 6-3, 6-0, 7-5 victory over in-form Russian Nikolay Davydenko on Wednesday.
Serena Williams kept her bid for a calendar-year Grand Slam on track, powering past big sister Venus 6-2, 1-6, 6-3 on a steamy star-studded night at the US Open in New York, on Tuesday.
Women's tennis's biggest names still remaining at the US Open take centre stage on Sunday with Grand Slam winners Maria Sharapova, Venus Williams, Garbine Muguruza and Petra Kvitova all appearing on Arthur Ashe Stadium.
The first teenager to play in a US Open final since Serena in 2001 there was symmetry to the moment as Gauff rallied to beat the second seeded Belarusian 2-6, 6-3, 6-2 and end a six-year barren stretch for American tennis fans, who were finally able to celebrate a homegrown champion.
Time is running out for Serena to reach the career milestone that has become one of the sport's longest running storylines.
Second-seeded Serbian Jelena Jankovic and third seed Sara Errani of Italy were both bundled out of the Family Circle Cup in Charleston on Friday in gripping quarter-final upsets.
World No 2 Li Na finally made her first appearance at the Sony Open on Sunday, taming Madison Keys in an unsteady effort while three-time champion Venus Williams was also made to work under a blazing Florida sun for her spot in the fourth round.
Thanks to rain, Victoria Azarenka, Venus Williams and 20 other women at the Olympics who have yet to complete a singles match could end up on court six consecutive days if they reach the gold medal round.
Maria Sharapova swept aside any fears about her fitness with a ruthless 6-0, 6-0 victory over Olga Puchkova on Monday as a trio of top women progressed with ease on the first morning of the Australian Open.
Second and third seeds Jelena Jankovic and Daniela Hantuchova were sent spinning from the Amelia Island tennis championship on Friday.
It was Venus's turn to write the Williams plot line at Wimbledon on Wednesday as she survived a gripping three-set battle with 40-year-old Japanese Kimiko Date-Krumm.
Venus Williams recovered from a slow start to beat Ukraine's Yuliana Fedak 7-5, 6-2 in the first round in Miami.
But matches between Venus and Serena are captivating, highly charged yet often disappointing affairs.
Roger Federer, Venus Williams and Jelena Jankovic all ran into a spot of bother on Monday before emerging unscathed to kick-start their French Open campaigns.
Venus and Serena Williams served their way into the U.S. Open quarter-finals with impressive straight-sets victories Sunday, setting up a possible clash between the American sisters in the final four.
She will meet Anastasia Myskina or Venus Williams who were playing their semi-final later on Saturday.
While 40 have tried only nine times have both Williams sisters been beaten by the same player at the same tournament and that list reads like a Grand Slam Hall of Fame with names that include; Steffi Graf, Martina Hingis, Lindsay Davenport, Justine Henin and Kim Clijsters, who like Pliskova, pulled the double off at the US Open.
Rain played spoilsport at the French Open for the second day running when a torrential downpour stopped the action for a second time on Monday.
Big-serving Elena Rybakina will aim to retain her title but other players have emerged as serious contenders: