Rachel Marjorie Tseng, 18, in action during the 800m freestyle event at the 47th Singapore National Age Group Swimming Championships. She finished fourth in the open category with a timing of 8:57.79, breaking the last meet record of 9:16.46 set by Bianca Goetz in 2013. (Photo 20 © Chua Kai Yun/Red Sports)

Rachel Marjorie Tseng, 18, in action during the 800m freestyle event at the 47th Singapore National Age Group Swimming Championships. She finished fourth in the open category with a timing of 8:57.79, breaking the meet record of 9:16.46 set by Bianca Goetz in 2013. (Photo 20 © Chua Kai Yun/Red Sports)

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