Raphaël Guillemette has been competing at the junior national level since 2015 when he played in the 8 & under events. Guillemette has been on the podium in the younger age categories each year and in 2021 won his first medal in the 14 & U events, winning silver in Boy’s Singles and gold in Boy’s Doubles. These results earned Guillemette a spot on the 2021 Junior National Team. He represented Canada at the 2021 Junior World Championships where he won bronze in 14 & U Boy’s Doubles with partner Asher Pocsai.