Weltklasse Zürich is an annual, invitation-only, world-class track and field meeting at the Letzigrund in Zürich, Switzerland, generally held at the end of August or beginning of September. Previously one of the IAAF Golden League events, it now serves as a final of the Wanda Diamond League, alongside Memorial Van Damme between 2010 and 2019. In 2021 and 2022, Weltklasse Zürich served as the sole final of the Diamond League, and this is also planned for 2025 and 2027. So far, 27 world records have been set at Weltklasse Zürich. In 1988, Carl Lewis won the 100-meter duel against Ben Johnson. The time of 9.93 seconds was upgraded to a world record a year later, following Johnson's doping case.