German long jumper Markus Rehm has the number nine as his phone wallpaper. The nine is to represent his goal – to become the first person in history to jump nine metres. After losing his right leg in a wakeboarding accident, his success is helped by the fact he is a prosthetist by profession, and researches how to support people with a similar impairment. He has competed against able-bodied athletes, and in 2023 jumped 8.72 metres, only 23 centimetres short of the able-bodied world record of Mike Powell of 8.95 metres set in 1991. His prosthesis has sparked a debate over the course of his career about whether it gives him a competitive advantage, and he was blocked from competing at the 2020 Tokyo Olympic Games.