Jonathan Tan, 14, in action during the 1500m freestyle event at the 47th Singapore National Age Group Swimming Championships. He finished second in the 13-14 age group with a timing of 16:47.48. (Photo 16 © Chua Kai Yun/Red Sports)

Jonathan Tan, 14, in action during the 1500m freestyle timed final at the 47th Singapore National Age Group Swimming Championships. He finished second in the 13-14 year olds age group with a personal best of 16:47.48. (Photo 15 © Chua Kai Yun/Red Sports)