In an exciting back-and-forth rubber lasting three hours 45 minutes, Siniakova held off the 19-year-old Fed Cup debutante to give the Czechs a 3-0 win in the final against a United States team who were the defending champions but were missing their top players.
World No 1 Serena Williams inflicted swift revenge on behalf of her older sister when she beat Britain's Laura Robson 6-2, 6-2 in the Rome Masters on Tuesday.
Serena Williams plans to play fewer tournaments in the future to aid her quest to win more Grand Slam titles, according to her coach Patrick Mouratoglou.
The 23-year-old says the points and calculations are far from her mind and it is the big events such as Wimbledon and next month's US Open that fire her up.
Kevin Anderson spoiled the American party at the US Open when the big-serving South African beat local favourite Sam Querrey 7-6(5), 6-7(9), 6-3, 7-6(7) to reach his first Grand Slam semi-final on Tuesday.
Serena and Venus Williams set up a tantalising semi-final against each other after both won twice on Friday in the rain-affected Family Circle Cup in Charleston, South Carolina.
After stunning Venus Williams then saving two match points en route to beating Polona Hercog last week, Gauff was suddenly the hottest ticket in town but she was always going to find it tough against Halep, last year's French Open champion and the first top-10 opponent she had ever faced.
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.
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World number one Naomi Osaka will "probably" defend her US Open title, even if it means defying her doctor's orders.
Deepika, Soha, Neha's camaraderie on stage will make you smile!
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.
Belgian duo Kim Clijsters and Justine Henin-Hardenne once again fell victim to the raw power of Williams sisters Venus and Serena.
Venus and Serena have not been beaten as a pair for 16 months now.
Jobs, who died last year after making his name and fortune at Apple, never got to use the yacht -- called Venus -- but had commissioned the French designer to work on the vessel, which cost more than 100 million euros to build.
Thursday's match was just Venus Williams's seventh of the year and first since January's Australian Open, where she fell to Simona Halep in the round of 32.
Champion Novak Djokovic and French Open winner Maria Sharapova were named top seeds for Wimbledon as the grasscourt Grand Slam mostly followed the rankings to draw up the list for the championships that begin on Monday. In the men's side, Rafa Nadal, Roger Federer and Andy Murray completed the top four while defending women's champion Petra Kvitova was seeded fourth.
Factbox on American Sloane Stephens, who beat compatriot Madison Keys 6-3 6-0 to win her first U.S. Open singles title on Saturday:
Rohan Bopanna's campaign at the last Grand Slam of the season ended with defeat in the mixed doubles along with Canadian partner Gabriela Dabrwoski while India's juniors also fizzled out in the singles in the US Open in New York.
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She becomes only the fifth woman to hold all four grand slam titles at the same time.
Defending doubles gold medallists Roger Federer and Stanislas Wawrinka were stretched by Japanese pairing Kei Nishikoir and Go Saeda on Monday, with the Swiss only winning the thrilling match 6-7, 6-4, 6-4 as darkness fell.
Jo-Wilfried Tsonga will make his Hopman Cup debut in Perth at the end of the year in what organisers boast will be the strongest ever field assembled for the mixed international tournament.
Despite a slight waver following her win over Venus Williams, Cori Gauff has taken the attention in her stride so far at the All England Club.
Germany's top-ranked tennis player Andrea Petkovic has pulled out of next week's Australian Open Grand Slam tournament with a stress fracture, organisers said on Wednesday.
Serena and Venus Williams were among six players nominated for the US Olympic women's team to compete in next month's London Olympics, the US Tennis Association (USTA) said on Tuesday.
Nadal set to face Kyrgios clash in second round
Russians Nadia Petrova and Maria Kirilenko avenged a pair of stinging London defeats by beating Venus and Serena Williams in the women's doubles at the US Open on Monday.
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.
Roger Federer moved a step closer to an elusive Olympic singles gold after reaching the final eight but Israel's Jonathan Erlich and Andy Ram ended the World No 1's hopes of repeating his Beijing doubles success.
Images from Day 1 of the Australian Open in Melbourne on Monday.
Seven-time champion Williams had been bidding to claim a record-equalling 24th Grand Slam crown but made too many errors as Kerber ran out a comfortable winner in the final.
The 19-year-old's triumph, which came in her US Open main draw debut and against the undisputed queen of the sport, was the latest step in a meteoric rise for Andreescu and it dominated front pages across the country.
Just because there are problems in Europe doesn't mean things are fine in the US.
The fourth seed Indo-Romanian pair needed 70 minutes to get the better of the 2014 US Open champions Marin Cilic of Croatia and Frank Moser of Germany 6-3, 7-6(10).
Serena Williams said it was a 'great feeling' to surpass Steffi Graf as the most prolific grand slam champion of the open era at the Australian Open on Saturday and was not prepared to put a number on the haul of titles she might end up with.
Rafael Nadal won a record 34th ATP Masters 1000 title with a 6-0, 4-6, 6-1 victory over Novak Djokovic in the Italian Open final on Sunday.