Namibia's T11 sprinter, Ananias Shikongo, found the going tough as he failed to progress to the finals of the T11 100m at the 2019 International Paralympic Committee (IPC) World Para Athletics Championships underway in Dubai, United Arab Emirates.
The championship is held at the Dubai Club for People of Determination.
Shikongo reached the semi-finals on Tuesday morning after running a seasonal best time of 11.15 seconds but failed to progress to the next round of the championships later on that evening after finishing last in heat two of their semi-finals.
This resulted in Shikongo and his guide Even Tjiviju to be disqualified.
French sprinter, Timothee Adolphe, and his guide Bruno Naprix won that heat in a time of 10.95 which was the fastest time from both heats.
Another surprise on the day was American world record holder David Brown who was eliminated in the semi-finals after finishing third in heat one in a time of 11.24 seconds.
The fastest second finisher spots were taken by Dongdong Di of China who clocked 11.00 seconds flats in heat two while Brazilian, Felipe de Souza Gomes, who came second in heat one in a time of 11.24 seconds locked out the final four spots in the T11 100m final.
Lucas Prado, also from Brazil, won heat one in a time of 11.02 seconds.