Lahni Buller has been a national junior-level competitor since 2021. She has earned a spot on the podium four times, including a gold medal in the 14U singles event at the 2022 championships. Buller’s ninth-place finish in the Women’s Open division at the 2024 National Championships, led to her first selection for the national development team. Buller represented Canada for the first time at the international level, competing in the 16U girl’s events at the 2024 World Junior Championships.