Venus Williams' tough run of form continued with a first-round loss to Bethanie Mattek-Sands at the Silicon Valley Classic, while Victoria Azarenka cruised through.

Williams has won just two matches since the French Open and the American veteran went down to Mattek-Sands 6-7 (4-7) 6-3 6-1 in a battle of the wildcards at the WTA Premier tournament in San Jose, California on Tuesday.

The seven-time grand slam singles champion had won her previous four matches against Mattek-Sands, but that run came to an end.

Azarenka, meanwhile, is continuing to enjoy a fine season and was untroubled by qualifier Harmony Tan, winning 6-2 6-4.

The two-time Australian Open champion set up a last-16 clash with Donna Vekic, the Croatian fifth seed having overcome Misaki Doi 6-4 3-6 6-4.

Vekic was one of two seeds in action, with Danielle Collins also progressing, getting past Zhang Shuai 6-4 5-7 6-2.

Meanwhile, Zheng Saisai hammered Heather Watson 6-3 6-1 and Madison Brengle breezed past Andrea Petkovic 6-0 6-3.

Top seeds Sloane Stephens and Madison Keys suffered shock first-round losses at the Citi Open, while Coco Gauff also departed on Tuesday.

Stephens, the 2015 champion and top seed, went down to Swede Rebecca Peterson 6-2 7-5 at the WTA International event in Washington.

Peterson managed to break Stephens' serve five times on her way to an upset win over the world number eight.

Keys was also stunned, losing to 17-year-old wildcard Hailey Baptiste, who was playing her first WTA Tour main-draw match and claimed a 7-6 (7-4) 6-2 win.

In main-draw action for the first time since her incredible run to the last 16 at Wimbledon, 15-year-old Gauff bowed out with a 6-4 6-2 loss to Zarina Diyas.

While Stephens and Keys were upset, two other seeds – Hsieh Su-wei and Monica Puig – encountered no problems.

Hsieh brushed past Kirsten Flipkens 6-4 6-3 and Puig was too good for wildcard Allie Kiick 6-4 6-2.

Kristina Mladenovic beat Shelby Rogers 6-4 6-4, wildcard Catherine Mcnally overcame Zhu Lin 6-4 6-2 and Camila Giorgi got past Sachia Vickery 6-2 7-5.

Coco Gauff will meet world number one Ashleigh Barty in an exhibition match during the Winston-Salem Open in August, tournament organisers have confirmed.

Gauff, 15, rose to stardom thanks to her superb performances at Wimbledon this month, where she beat Venus Williams on her way to the last 16.

The teenager was eliminated by eventual champion Simona Halep but returned to winning ways in style against Hiroko Kuwata on Sunday to ease into the main draw at the Citi Open.

French Open champion Barty also slipped out of Wimbledon in the fourth round, suffering a surprise defeat to Alison Riske.

Gauff and Barty will now go head to head at the ATP Tour event at Wake Forest University, North Carolina, on August 21.

Mihaela Buzarnescu's Silicon Valley Classic title defence ended at the first hurdle, while CoCo Vandeweghe made her first appearance in 10 months.

Defending champion Buzarnescu was a shock casualty on Monday, the Romanian eliminated by Daria Kasatkina 6-2 6-2 in San Jose.

Two-time grand slam semi-finalist Vandeweghe, meanwhile, enjoyed a winning return against Marie Bouzkova 6-2 6-4 at the WTA Premier tournament.

Recurring ankle and foot injuries had left former world number nine Vandeweghe sidelined since the 2018 China Open in September, however, she celebrated a successful comeback.

"It wasn't easy. To think, five months ago, I wasn't even walking to be here, playing, in my first...match of the year, I'm just full of emotions," said Vandeweghe, who also snapped a nine-match losing streak in singles, dating back to the Libema Open in June last year.

Awaiting American Vandeweghe – San Jose runner-up in 2012 and 2017 – in the next round is second seed Aryna Sabalenka.

Carla Suarez Navarro and last year's runner-up Maria Sakkari also progressed to the second round with respective wins over Magda Linette (6-3 6-3) and Ekaterina Alexandrova (6-1 6-4).

Kristie Ahn outlasted Ajla Tomljanovic 6-3 4-6 6-4 to set up a clash with third seed Elise Mertens and Mayo Hibi prevailed 6-2 3-6 7-6 (7-3) against Timea Babos.

At the Citi Open, former Wimbledon finalist Bouchard lost to American Lauren Davis 6-1 6-2 in Washington.

Next up is third seed Sofia Kenin, who was too good for Jennifer Brady 6-2 6-4 earlier on Monday.

Lesia Tsurenko – the fifth seed – eased past Wang Yafan 6-3 6-2, Christina McHale topped Anastasia Pavlyuchenkova 6-2 4-6 7-5, Nao Hibino lost 6-1 6-1 to Anna Kalinskaya, Jessica Pegula beat sixth seed Katerina Siniakova 6-4 6-3, Varvara Gracheva defeated Anna Blinkova 6-2 5-7 6-2 and Iga Swiatek saw off Ons Jabeur 4-6 6-4 6-4.

Jil Teichmann stunned world number five Kiki Bertens to win the Palermo International in straight sets on Sunday.

Teichmann was ranked outside the top 140 at the start of the season but continued her rise with a 7-6 (7-3) 6-2 defeat of top seed Bertens in Sicily.

The eighth seed from Switzerland claimed her first victory over a top-10 opponent to secure a second WTA Tour title of the year.

World number 82 Teichmann went a break up three times in the opening set and the battling Bertens saved three set points before forcing a tie-break.

Bertens fell behind after Teichmann secured three mini-breaks to one for the Dutchwoman and the left-hander maintained her momentum in the second set.

Teichmann continued to pile the pressure on Bertens, breaking twice to put herself well on course for the title and serving out the match to love.

The 22-year-old and Bertens are among only seven women to have won more than one singles title this year.

Anastasija Sevastova came from a set and a break down to beat Katarzyna Kawa and win the inaugural Baltic Open on home soil.

Top seed Sevastova served to stay in the match in the second set before going on to win 3-6 7-5 6-4 in Jurmala on Sunday.

Polish qualifier Kawa was certainly not overawed at the end of a week in which she made her WTA main-draw debut but was unable to finish off Sevastova.

The favourite was in trouble after losing the opening two games of the second set before battling her way back into the contest.

World number 11 Sevastova, 183 places above her opponent in the rankings, rallied under pressure with the backing of a home crowd, winning five games in a row to level the match and take the initiative in the deciding set.

Kawa stopped the rot to break back at 2-2, but Sevastova broke again in the next game and went on to become the first winner of the tournament.

Kiki Bertens will face Jil Teichmann in the Palermo International final after the top seed overcame Paula Badosa in straight sets on Saturday.

The world number five, bidding to win a third title of the year, moved into the championship match with a 6-1 7-5 defeat of the unseeded Spaniard.

Bertens needed eight match points to end Badosa's resistance, advancing despite a first-serve percentage of only 49.

The Dutchwoman broke twice in a one-sided first set and three times in the second, failing to consolidate on two occasions as she made hard work of sending the 119-ranked Badosa packing.

Teichmann, the eighth seed, coasted to a 6-3 6-1 thrashing of Liudmila Samsonova.

The world number 82 won her maiden WTA title in Prague in May and will need to pull off a big upset to double her tally.

Top seed Anastasija Sevastova will face the unheralded Katarzyna Kawa in the inaugural Baltic Open final.

Latvian Sevastova saw off Anastasia Potapova 6-4 6-2 in her homeland and will be a resounding favourite to beat WTA main-draw debutant Kawa, who got past Bernarda Pera 6-2 6-3 in Jurmala.

 

Kiki Bertens moved within one victory of the WTA Palermo Open final after outlasting Jasmine Paolini.

Bertens – the top seed – battled to a 6-4 1-6 6-1 win over her Italian opponent as she reached the semi-finals in Sicily on Friday.

World number five Bertens needed almost two hours to seal her spot in the final four, with the match finishing past 01:00am (local time).

Next up for Bertens is Spaniard Paula Badosa who made light work of Arantxa Rus 6-2 6-1.

Russian lucky loser Liudmila Samsonova stunned seventh seed Fiona Ferro in a marathon 6-7 (4-7) 6-3 6-4 victory, while eighth seed Jil Teichmann advanced after Anna-Lena Friedsam retired due to injury when trailing 6-0 1-0.

At the Baltic Open, sixth seed Anastasia Potapova reached the semi-finals with a 6-4 0-6 6-4 win over Patricia Maria Tig.

Top seed and home favourite Anastasija Sevastova was too good for Irina Bara 7-6 (7-3) 6-2, Katarzyna Kawa beat Chloe Paquet 6-2 6-2 and Bernarda Pera trumped Nina Stojanovic 4-6 6-4 6-3.

Palermo Open top seed Kiki Bertens made light work of Aleksandra Krunic to reach the quarter-finals in Sicily.

After a disappointing performance at Wimbledon, world number five Bertens has shrugged off her poor form so far in Palermo, and had little trouble in claiming a last-eight spot with a 6-3 6-1 win on Thursday.

Third seed Viktoria Kuzmova was unable to join her, though, as she was ousted by world number 130 Arantxa Rus.

Rus beat the Slovakian 6-4 6-4, breaking Kuzmova six times for her first win over a top-50 opponent this year.

She will now face Paula Badosa, after the Spaniard overcame Fanny Stollar in straight sets.

Meanwhile, Anastasia Potapova had to see off a fightback from Latvian wildcard Diana Marcinkevica in the Baltic Open.

Teenager Potapova took the first set in just 22 minutes, though Marcinkevica restored parity before the sixth seed secured the win in the decider.

Bernarda Pera, Nina Stojanovic and Irina Bara - who will face top seed and world number 11 Anastasija Sevastova in the last eight - also progressed in Jurmala.

Chloe Paquet claimed the biggest scalp of her professional career as the French player stunned compatriot Carolina Garcia in round two of the Baltic Open.

Paquet is ranked 156th in the world by the WTA and the 25-year-old recently lost to British player Gabriella Taylor in the first round of Wimbledon qualifying.

But she recorded a 4-6 6-4 6-3 victory against world number 22 Garcia at the tournament in Jurmala, Latvia.

Garcia was the second seed at the clay-court event and had beaten Paquet in straight sets in all of their three previous meetings.

Romanian Patricia Maria Tig won 6-4 6-4 against Ukrainian Anhelina Kalinina, while Russian sixth seed Anastasia Potapova saw off Austrian Barbara Haas 6-2 6-3.

In front of a home crowd, Latvian top seed Anastasija Sevastova skirted with trouble before edging out Slovenian Dalila Jakupovic 6-7 (3-7) 6-2 6-4.

Poland's Katarzyna Kawa, who has spent a decade as a professional without reaching a WTA final, scored a resounding 6-3 6-0 win against Croatian Jana Fett to set up a quarter-final meeting with Paquet.

At the Palermo Open, French second seed Alize Cornet made a second-round exit as she stumbled 7-5 6-4 against German Anna-Lena Friedsam.

Slovenian fourth seed Tamara Zidansek exited too, a 6-2 7-5 victim of Russian Liudmila Samsonova, but eighth-seeded Swiss Jil Teichmann safely advanced by winning 6-1 7-6 (7-4) against Brazilian Gabriela Ce.

In a late finish, Fiona Ferro progressed by easily beating Giulia Gatto-Monticone of Italy 6-3 6-2.

Jelena Ostapenko suffered a crushing defeat in front of her home fans at the Baltic Open as Bernarda Pera thrashed her in the first round.

The 2017 French Open champion could not use the support of the fans in Jurmala to her advantage as Pera, coming off a run to the semi-finals at the Ladies Open Lausanne, eased to a 6-2 6-1 win in just 66 minutes.

"I feel great," Pera said. "Every ball, I saw really big, and thank God I got to finish early!"

Speaking later in her post-match media conference, the American added: "I knew I could win this match. I just had to stay focused and stick to my game plan. I felt pretty good from the beginning and I'm happy to get through."

While eighth seed Ostapenko crashed out, top seed and compatriot Anastasija Sevastova had no problems as she hammered Varvara Flink by the same scoreline. Second seed Caroline Garcia battled to a 6-3 6-7 (6-8) 7-6 (8-6) win over Kristyna Pliskova.

There were, however, other shocks on Tuesday as Katerina Siniakova lost to Anhelina Kalinina in three sets while qualifier Nina Stojanovic overcame fourth seed Aliaksandra Sasnovich in a contest that also went the distance.

Wildcard Jana Fett got the better of seventh seed Tatjana Maria across three sets while Valentyna Ivakhnenko carried qualifying momentum into the main draw with a 6-0 6-4 victory over Sorana Cirstea.

Bucharest Open champion Elena Rybakina beat Han Xinyun and runner-up Patricia Maria Tig defeated Ankita Raina, while there were also wins for Paula Ormaechea, Katarzyna Kawa and Chloe Paquet.

At the Palermo Open, world number five Kiki Bertens was emphatic in dispatching Ekaterine Gorgodze 6-0 6-1, while second seed Alize Cornet struggled past wildcard Martina Trevisan 6-7 (5-7) 6-4 6-1.

Third seed Viktoria Kuzmova survived a three-set scare against Elisabetta Cocciaretto and Lausanne champion Fiona Ferro – who beat Cornet in the final – knocked out seventh seed Sara Sorribes Tormo in straight sets.

Jasmine Paolini stunned sixth seed Laura Siegemund 6-1 6-4, Fanny Stollar triumphed over Sara Errani, Jil Teichmann saw off Daria Gavrilova and Irina Camelia-Begu and Anna-Lena Friedsam also earned victories.

Poor weather stopped Katerina Siniakova as she led at the Baltic Open, where Margarita Gasparyan departed on Monday.

Siniakova, the third seed in Latvia, was impressing in the final match of the day, leading Anhelina Kalinina 6-4 4-3, when the match was suspended due to a downpour.

The duo will be forced return to the court on Tuesday.

Gasparyan will not be back, though, as she retired when trailing 6-4 4-6 4-0 to Irina Bara.

Diana Marcinkevica ensured there would be a home representative in the next round with a 6-4 6-3 win over Kamilla Rakhimova, while Dalila Jakupovic won the other main-draw match 6-3 7-6 (7-5) against Ana Bogdan.

Pauline Parmentier, who notably defeated Maria Sharapova at Wimbledon, fell at the first hurdle at the Palermo International.

The fifth seed went out to Paula Badosa 6-4 7-6 (7-4), but fourth seed Tamara Zidansek fared better, beating Lara Arruabarrena 6-2 6-3.

Elena Rybakina landed her first WTA title with an emphatic win over Patricia Maria Tig in the Bucharest Open final.

The story of qualifier Tig reaching the final against all expectations had provided the tournament's core narrative but she was swept aside 6-2 6-0 by 20-year-old Rybakina in the final.

Romanian Tig does not have a world ranking and was making her first WTA main draw appearance since 2017 after struggling with multiple injuries as well as giving birth to her daughter in the past year.

The 24-year-old beat three seeded players to reach her first final in four years.

But despite playing in front of a home crowd, she found Kazakhstan's Rybakina too much to handle in the title match, losing in an hour and five minutes.

The unseeded Fiona Ferro took Alize Cornet apart in the final set of an all-French final to win her maiden WTA title at the Ladies Open Lausanne.

Ferro held her nerve in her first singles final to beat the defending champion 6-1 2-6 6-1 on Sunday.

Third seed Cornet won the title when the event was staged in Gstaad last year, but there was to be no repeat as the 98th-ranked Ferro denied her compatriot.

The 22-year-old Ferro lost just six points on serve in the first set and broke twice as Cornet struggled to get going.

Cornet responded well in the second, grasping all three break-point opportunities to level the match, but she was unable to maintain the momentum.

Ferro got on a roll to win five games in a row in her first encounter with Cornet to take the title.

Patricia Maria Tig continued her fairy-tale run at the Bucharest Open by cruising into Sunday's final.

The Romanian qualifier does not have a world ranking and is making her first WTA main draw appearance since 2017 after struggling with multiple injuries as well as giving birth to her daughter in the past year.

And Tig's week to remember at her home tournament went on with an emphatic 6-3 6-1 triumph over sixth seed Laura Siegemund.

Tig has only lost one set all week and saved each of the eight break points she faced against Siegemund, winning in 87 minutes.

"It's very, very special to be in the final in Bucharest," said the emotional victor, who has beaten three seeded players to reach her first final in four years.

Tig, 24, will meet either Elena Rybakina or Martina Di Giuseppe in in the showpiece, the second semi-final having been heavily disrupted by rain.

The final of the Ladies Open Lausanne will see Alize Cornet take on Fiona Ferro in an all-French affair after both players won their last-four matches in straight sets.

Ferro saw off Bernarda Pera 6-1 6-4 in Saturday's opening match to reach a first WTA final, her American opponent failing to register a single break of serve.

Number three seed Cornet, who won the event last year when it was played in Gstaad, then got the better of Tamara Korpatsch 6-3 6-4 in two sets that by contrast produced 11 breaks.

"I think it's going to be hard and beautiful at the same time," Cornet said ahead of the clash with her compatriot. "[Ferro is] the new generation of the French players, and she's such a nice girl.

"She's a bit like my little sister on the tour, and I like her a lot. It's always tough, especially when you play a friend. But in both cases it's going to be beautiful, because either I win or my friend wins."

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