Top 10 tennis player Kiki Bertens will miss the start of next season, including the Australian Open, after having surgery on her left Achilles tendon. The 28-year-old from the Netherlands announced the news on Instagram on Tuesday, posting a picture of herself in a hospital bed with her leg in a cast.

Vancouver's Vasek Pospisil upset Montreal's Felix Auger-Aliassime 7-5, 7-5 Wednesday in first-round action at the Erste Bank Open. Pospisil, a qualifier at the ATP 500 indoor hardcourt tournament, broke world No. 21 Auger-Aliassime in the final game of each set.

Novak Djokovic overcame a slow start and saved a set point before beating Filip Krajinovic 7-6 (6), 6-3 Tuesday in an all-Serbian first-round match at the Erste Bank Open. Djokovic had an early break for a 3-1 lead but lost the next four games against his regular hitting partner.

Canada's Denis Shapovalov is out of the Vienna Open after suffering a first-round loss to a player with just one previous win at the ATP Tour level. Austrian wild-card Jurij Rodionov, ranked 153rd in the world, beat the eighth-seeded Shapovalov 6-4, 7-5 on Monday at the hard-court event.

Alexander Zverev made it back-to-back ATP Tour titles on Sunday when he beat Diego Schwartzman 6-2, 6-1 in the final of the Cologne Championship.

Third-seeded Aryna Sabalenka cruised to the title at the inaugural Ostrava Open on Sunday, defeating fourth-seeded Victoria Azarenka 6-2, 6-2 in the first WTA all-Belarusian final.

Alexander Zverev moved one match away from winning back-to-back ATP Tour titles after he beat Jannik Sinner in the Cologne Championship semifinals on Saturday to set up a final against Diego Schwartzman.

Ottawa's Gabriela Dabrowski and Brazilian partner Luisa Stefani have advanced to the women's doubles final of the Ostrava Open on Saturday. Dabrowski and Stefani moved to the final of the Premier Level hardcourt tournament in the Czech Republic when the Czech pairing of Katerina Siniakova and Barbora Krejcíkova walked over.

Top-seeded Alexander Zverev defeated Adrian Mannarino 6-4, 6-7 (5), 6-4 to reach the Cologne Championship semifinals on Friday.

Canada's Milos Raonic has withdrawn from the European Open because of an abdominal strain. The No. 5 seed, from Thornhill, Ont., was scheduled to face No. 4 seed Grigor Dimitrov of Bulgaria in a quarterfinal at the ATP Tour 250 hard-court event on Friday.

Canadian Denis Shapovalov, who received a first-round bye, lost 6-1, 4-6, 6-2 to France's Gilles Simon in a second-round match at the Cologne Championship.

Canada's Felix Auger-Aliassime rallied for a 4-6, 7-6 (2), 7-6 (4) victory over qualifier Egor Gerasimov of Belarus in the second round of the Cologne Championship on Wednesday.

Canada's Milos Raonic has advanced to the second round of the European Open. The No. 6 seed, from Thornhill, Ont., beat world No. 52 Aljaz Bedene of Slovenia 6-3, 7-6 (4) at the ATP Tour 250 hard-court event on Wednesday.

Former Wimbledon semifinalist Julia Goerges announced her retirement from tennis Wednesday at the age of 31. The German reached her highest ranking of ninth in the world in 2018 and was ranked 45th at her retirement.

Alexander Zverev ended his 17-month wait for a title by beating Felix Auger-Aliassime 6-3, 6-3 to win the Cologne Indoors on Sunday.

Andrey Rublev joined Novak Djokovic as the only men to win four tour singles titles in the pandemic-shortened 2020 season as he beat Borna Coric 7-6 (5), 6-4 on Sunday in the final of the St. Petersburg Open.

Montreal's Felix Auger-Aliassime is through the final of the Cologne Open after posting a 6-3, 1-6, 6-3 win over Spain's Roberto Bautista Agut in a semifinal match Saturday.

Canadians Denis Shapovalov and Milos Raonic were ousted in the semifinal round Saturday at the St. Petersburg Open tennis tournament.