Double world 200-metre champion Shericka Jackson pulled up with an injury late in a race in Hungary on Tuesday, less than three weeks before the start of the Olympics.
The Jamaican was leading the race entering the home straight before abruptly slowing down, grimacing and putting her head in her hands as she eventually walked across the finish line.
The race was won by Julien Alfred of Saint Lucia.
Jackson, 29, has the second-fastest time ever in the event. She also won silver in the 100m at last year’s world championships.
Her compatriot Elaine Thompson-Herah, who completed the 100m-200m gold medal double at both the 2016 and pandemic-delayed 2020 Olympics, was ruled out of the Paris Games last month after failing to recover from an Achilles injury.