Top-seeded Iga Swiatek increased her winning streak to 21 consecutive matches by dispatching eighth-seeded Brit Emma Raducanu on Friday to reach the semifinals of the Porsche Tennis Grand Prix at Stuttgart, Germany.

The 20-year-old Polish star saved four of five break points while winning her first career match against the 19-year-old Raducanu. It also marks the 13th consecutive match that Swiatek won in straight sets.

World No. 1 Swiatek will next face Russian Liudmila Samsonova, who knocked off Germany’s Laura Siegemund 7-5, 6-3 in her quarterfinal match. Samsonova will be looking for her second Top 10 victory of the week after upsetting World No. 7 Karolina Pliskova of the Czech Republic on Thursday.

Second-seeded Paula Badosa of Spain advanced to the semis with a 7-6 (9), 1-6, 6-3 victory over seventh-seeded Ons Jabeur of Tunisia. Badosa will face third-seeded Aryna Sabalenka after the Belarusian posted a 6-4, 3-6, 6-1 win over fifth-seeded Anett Kontaveit of Estonia.

TEB BNP Paribas Tennis Championship Istanbul

Yulia Putintseva of Kazakhstan recorded five aces while beating sixth-seeded Australian Ajla Tomljanovic 5-7, 6-2, 6-4 to reach the semifinals in Turkey.

Putintseva, who saved nine of 12 break points, never trailed over the final two sets of the match that took two hours, 51 minutes. She next faces Russian qualifier Anastasia Potapova, who rolled to a 6-2, 6-2 victory over seventh-seeded Sara Sorribes Tormo of Spain.

Defending champion Sorana Cirstea, the No. 2 seed from Romania, moved on with a 7-5, 6-1 victory over Austria’s Julia Grabher. Cirstea will next face third-seeded Russian Veronika Kudermetova, who knocked off Hungary’s Anna Bondar 7-6 (9), 7-6 (3).

–Field Level Media