Swimmers from Hong Kong, Indonesia and the Philippines were among those who failed to qualify for the semi-finals of the 200m breastroke and 100m freestyle in the Rio pool on Wednesday.
In the 100m freestyle, Hong Kong’s Camille Cheng qualified in 24th place overall after finishing third in heat 3 with 54.92.
Thailand’s Natthanan Junkrajang and Jasmine Alkhaldi of the Philippines finished second and third in heat 2 with 56.24 and 56.3 respectively, though that was only good enough to qualify in 32nd and 33rd overall.
Australia’s Cate Campbell set the fastest time in qualifying, winning heat 5 with a time of 52.78.
In the women’s 200m breaststroke, there was big disappointment for Hong Kong’s Yvette Man-Yi Kong as she suffered a DNS in heat 1.
Rikke Moller Pedersen of Denmark qualified in first place in heat 2 with a time of 02:22.7.
Kong, who overcame a bout with depression in order to qualify for Rio, is still scheduled to complete in the 4x100m medley relay on Friday.