Ferdinand Omanyala, who had qualified for the finals after clocking 9.97 seconds at the semi-finals, came seventh in 10.01 seconds at the World Athletic Championships Budapest 23.
Noah Lyles bagged the gold medal in 9.83 seconds, while Botswana’s Tebogo Letsile clocked a national record with 9.88 seconds. British national Zharnel Hughes earned the bronze medal.
This was his first-ever final at a world championship after securing qualification by the finest of margins during Sunday’s semis in Budapest, Hungary.
The Commonwealth champion finished outside the top two automatic qualification slots in Heat One, leaving his fate to be decided by the events of the heats that followed.
Only the top two in each of the three semi-finals, plus the next two fastest, advanced to the final, and Omanyala just about cut as he advanced with the last available slot.
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The current world champion Fred Kerley, who exited the world championships in the biggest upset to date, paid a heavy price for his qualification.
Likewise, Olympic champion Marcell Jacobs, who had been out of practice, finished fifth in the same heat as Omanyala at Budapest with a time of 10.05 seconds. American Noah Lyles had won the heat.
In a crowded race, Jacobs came in last, trailing Lyles, Abdul Hakim Sani Brown of Japan, who came in second, and Omanyala, who came in third.
After that, Kerley placed third in his semifinal in 10.02 seconds, trailing only Letsile Tebogo of Botswana and Oblique Seville of Jamaica.
The possible matchup between Kerley and Jacobs had dominated much of the lead-up to the world championships.
Jacobs beat the American to Olympic gold in Tokyo in a European record of 9.80 two years ago, but the pair have yet to meet on the track since.
Kerley claimed gold in Eugene last year after Jacobs pulled out of his semi-final with an injury.