The Indians participated in three events on the opening day of the swimming competitions at the Munhak Park Tae-hwan Aquatics Center here.
Saurabh Sangvekar ended fifth in the men's 200m freestyle heat with a timing of 1:53.33.
In the men's 100m backstroke heats, Madhu Nair clocked 57.81 to finish seventh.
In men's 200m butterfly event, Agnel Dsouza finished a creditable fourth with a timing of 2:04.74. He has made the reserves list for the final but is unlikely to make the cut.