Puthi (Kunanan Pantaratorn) was born in July 2008 and Pine (Dharma Pantaratorn) was born in August 2010
Both Puthi and Pine started learning tennis when they were almost 4 years old. They started various junior tennis competitions in Thailand since 6 years old.

In 2016 Puthi was the champions in the Thailand Junior Tennis Tournament under the Royal Patronage by winning both U8 boys' single and U8 boys' double. His U8 tennis player ranking in Thailand was no.1 in that year.

In 2018 Puthi was the champions in the Thailand Junior Tennis Tournament under the Royal Patronage by winning both U10 boys' single and U10 boys' double. Pine, Puthi's younger brother, also was the champions in the Thailand Junior Tennis Tournament under the Royal Patronage by winning both U8 boys' single and U8 boys' double. Both of their tennis player rankings in Thailand were no.1 in that year, U10 for Puthi and U8 for Pine.

In 2020 Puthi was selected to join in the Thailand National Tennis Team for U12. The tennis player rankings in that year were number 1 in Thailand for both of Puthi and Pine, U12 and U10 respectively. Pine was the champions in the Thailand Junior Tennis Tournament under the Royal Patronage by winning both U10 boys' single and U10 boys' double.

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