Competing at the Paris La Defense Arena, Rouxin clocked 1:12.50s to finish ahead of Moroccan Imane Houda El Barodi, who came in second with 1:14.57s while Ellie Shaw of Antigua and Barbuda finished third with a time of 1:14.78s.

The 18-year-old debutante finished 33rd overall while Tatjana Smith of South Africa, who won the fourth heat, topped the chart with a time of 1:05.00s.

The time recorded by Rouxin was miles off the national record held by Phee Jinq En (1:08.40s) set in Tokyo 2020.

Today’s result saw none of the Malaysian swimmers get past the first hurdle after Khiew Hoe Yean fell short in the second heat of the men’s 400m freestyle yesterday.

Estonia’s Kregor Zirk dominated the heat with a time of 3:49.59s, while Chile’s Eduardo Cisternas clocked in at 3:51.29s for second place and Uzbekistan’s Ilya Sibirtsev finished third in 3:51.52s.

Despite his efforts, Hoe Yean’s time didn’t secure him a spot among the top eight swimmers to advance to the final.