Norwegian hurdler and sprinter Karsten Warholm (L) and Swedish pole vaulter Armand Duplantis (R) compete in a head-to-head exhibition 100m sprint race on the sideline of the IAAF Diamond League "Weltklasse" athletics meeting, at the Letzigrund Stadium in Zurich, on September 4, 2024. The two track stars took up a 100 metres race challenge on the eve of the Diamond League meeting to make good on some training ground banter that has escalated all the way to a sprint-off. They are both current World record holders, in pole vaulting for Duplantis and 400m hurdles for Warholm. (Photo by Fabrice COFFRINI / AFP)