Blessing Okagbare of Nigeria made the 100 meter finals at the Olympics, but couldn't rally in that race and finished eighth with a time of 11.01 seconds.
Earlier in the day she overcame a slow start in the semifinals to win her heat with a personal-best time of 10.92 that put her in her first Olympics finals, but couldn't find the extra gear she showed in the semis.
Jamaica's Shelly-Ann Fraser-Pryce edged America's Carmelita Jeter for gold with a time of 10.75.
Okagbare staged a remarkable rally in the semifinals, charging from near the back of the field at the midpoint to nip America's Tianna Madison, as both were timed in 10.92. That stood as the fourth-best time in the semis. Madison finished fourth in the finals.
Okagbare will also compete in the long jump, which begins with qualifying Tuesday, and the 4x100 relay with former Miner teammate Oludamola Osayomi, which begins Aug. 10. She is the defending Olympic bronze medalist in the long jump.