Premier 5 tournament at the Canadian Open, reaching the third round as qualifier. After leading throughout the majority of both sets, Alexandrova fell to Serena Williams in straight sets. Alexandrova also led world No. 4, Simona Halep, by a set and a break in the second round of the Western & Southern Open, but failed to sustain her high level. She was defeated by 33rd seed Zhang Shuai in the second round of the US Open, a player whom she defeated in Cincinnati earlier on. Nonetheless, she became the highest-ranked Russian after this tournament. Alexandrova reached her second career WTA semifinal at the Korea Open, where she beat Kristie Ahn in the quarterfinals by hitting a personal-record 22 aces. Another strong run came at the Premier Mandatory event, the China Open. There, she stunned world No. 5, Halep, in straight sets after her disappointment in Cincinnati, claiming the biggest win of her career. However, she was defeated by compatriot Daria Kasatkina in straight sets. Defending finalist points at the Linz Open, Alexandrova rolled into the semifinals but failed to convert her match points against Jeļena Ostapenko and leading in both the second and final sets. Making her main-draw debut at the Kremlin Cup, the Russian made the quarterfinals although her run was eventually stopped by the in-form Karolína Muchová. For the third time in her career, Alexandrova closed out her season with a triumph at the Open de Limoges, this time lifting the trophy as the top seed. 2020: First WTA title, Fed Cup debut Alexandrova started the 2020 season at the Shenzhen Open. Seeded fifth, she won her first WTA singles title beating seventh seed Elena Rybakina in the final. As a result, she became the first player to win a WTA tournament in the new decade. At the Australian Open where she was seeded at a Grand Slam event for the first time, she reached the third round where she lost to seventh seed and last year finalist, Petra Kvitová. Alexandrova then represented Russia for the first time in her career, leading the team against Romania in the Fed Cup as the Russian No. 1. On her debut, she led Russia to a tight 3-2 win over the home team, defeating Elena-Gabriela Ruse in straight sets and Ana Bogdan in a tight three-setter, helping to book Russia's spot in the inaugural Fed Cup Finals. She next participated at