[2][3] He competed at the 2018 Summer Youth Olympics, winning the bronze medal in the boys' middleweight event.

[1] He also competed at the 2021 AIBA World Boxing Championships, winning the bronze medal in the middleweight event.

[5] Somjit Jongjohor, the flyweight champion of the 2008 Summer Olympics, is his uncle.

Weerapon is considered a fighter-style boxer with an aggressive fighting style.

[6] In the 2024 Summer Olympics, he competed in the 80 kg event (light heavyweight), he was eliminated in the first stage (round of 32) when he lost to Cristian Pinales from the Dominican Republic 0–5.