Iga Swiatek cemented her position as the undisputed queen of clay
Holder Serena Williams beat Justine Henin 6-2, 6-0 to reach the semi-finals of the Sony Ericsson Open.
Iga Swiatek will be looking to join a select band of players who have lifted the Suzanne Lenglen Cup four times
The world number one began the defence of her WTA Championships singles title with a 6-1, 7-6 win over Russian Anna Chakvetadze.
The Belgian defeated Russian Elena Dementieva 7-5, 6-4 to win the Family Circle Cup for a second time.
The world number one is feeling calm and happy after a period of personal upheaval.
American brothers Bob and Mike Bryan were named ITF men's doubles champions.
Justine Henin's hopes of a fifth French Open title vanished with a 2-6, 6-1, 6-4 fourth-round defeat by Australian seventh seed Samantha Stosur on Monday.
Belgium's Justine Henin- Hardenne secured the year-end number one ranking in resounding fashion on Friday.
A medical report said the world number one is suffering from a viral infection.
The world number one beat Conchita Martinez 2-6, 7-5, 6-3 in the third round of the Amelia Island championship in Florida.
The world number one overcame Nathalie Dechy, while Jennifer Capriati beat Silvia Farina Elia at the Qatar Open.
Henin and Williams have met eight times in their careers but Saturday's clash will be the first since the muscular American won a semi-final meeting with the Belgian at Wimbledon nearly four years ago.
Belgian pair Justine Henin and Kim Clijsters will meet in the semi-finals of the Sony Ericsson Open after both advanced through their quarter-final ties on Wednesday.
Swiss Federer will be bidding for his fourth consecutive title at Flushing Meadows, while Belgian Henin is hoping to repeat her 2003 triumph.
Former world number one Justine Henin continued her comeback from a six-month injury absence as she inspired Belgium to victory over Kazakhstan at the Hopman Cup mixed team event on Tuesday.
The Belgian dished out a painful 6-1 6-2 lesson to Serbian school student Ana Ivanovic to become the first woman since tennis turned professional in 1968 to win back-to-back Roland Garros crowns without dropping a set.
World number one Justine Henin made a problem-free return to the court on Thursday, beating Dinara Safina 6-4, 6-1 in her first match since winning the US Open.
The Belgian was beaten by little-known Italian Tathiana Garbin, while the American was humbled by Frenchman Olivier Mutis at the French Open..
The Belgian raced to victory in one hour, 22 minutes to become the first woman to win the title without losing a set since Serena Williams in 2002.
World number one Justine Henin and second seed Jelena Jankovic refused to be blown off course by recording quarter-final wins on a wild and windy day at the Toronto Cup on Friday.
A super-charged Justine Henin-Hardenne crushed Mary Pierce 6-1 6-1 to win the French Open crown for the second time on Saturday.
Former world No. 1 Justine Henin-Hardenne beat Tatiana Golovin while Dementieva beat Patty Schnyder.
Belgian Justine Henin-Hardenne twice clawed herself back from the brink of defeat to beat Italy's Francesca Schiavone 4-6, 7-5, 7-5 in the final.
Top seed Justine Henin rallied from a set down to beat Jelena Jankovic and reach the final of the Qatar Open.
Justine Henin, playing her first match of the year, had to come back from a set down to beat Frenchwoman Emilie Loit at the Paris Open on Wednesday.
Defending champion Nadia Petrova was also shown the door in the quarter-finals of the German Open.
The time away from tennis has helped Justine Henin "grow up" as an individual and the former world number one is confident she is returning to the tour a better player.
It was the fourth-seeded Belgian's third Dubai and 25th career title.
The third seed won her first Grand Slam title when the Belgian retired from the women's singles final because of injury.