Lionel Khoo in action during the butterfly leg of his 15 and over 400m IM 'A' finals at the 47th Singapore National Age Group Swimming Championships. He came in fifth in the open group with a timing of 4:33.81. (Photo © Soh Jun Wei/Red Sports)

Lionel Khoo in action during the butterfly leg of his 15 years old and over 400m IM ‘A’ final at the 47th Singapore National Age Group Swimming Championships. He came in fifth in the open age group with a huge personal best of 4:33.81. (Photo 14 © Soh Jun Wei/Red Sports)