The German Open[1] (previously known as the Grass Court Championships Berlin, bett1open, and since 2024 the Berlin Ladies Open) is a WTA Tour affiliated professional tennis tournament for women played in West Berlin, West Germany (until 1990), then Berlin, Germany from 1991 to 2008 following reunification. Held since 1896, it was one of the oldest tournaments for women. Until 1978 the tournament was held in Hamburg together with the men's tournament. From 1988, it was classified on the WTA Tour as a Tier I tournament. Since 2021, it is a WTA 500 tournament.
After an absence of more than a decade, the tournament was announced to return to the WTA calendar for the 2020 season. However, the event was cancelled in April 2020 due to the COVID-19 pandemic and it would be due to return in 2021. The new event is classified as a Premier-level tournament and serve as a warm-up event towards the Wimbledon Championships, having switched its surface from clay to grass.[2][3]
Past champions of the tournament include former world number ones Billie Jean King, Chris Evert, Steffi Graf, Monica Seles, Arantxa Sánchez Vicario, Martina Hingis, Amélie Mauresmo, Justine Henin, Ana Ivanovic and Dinara Safina.