[3] In 2019, Yon Yoeurn was selected to join the football club Nagaworld FC, marking a key career milestone.
[5] On 19 June 2024, Yon joined Lao Women's League club Young Elephants on loan for their 2024–25 AFC Women's Champions League Preliminary Stage campaign, becoming the first locally developed female player to play abroad.
[8] In April 2022, Yon was called up to the Cambodia senior national team to compete in the 2021 SEA Games.
[9] Later that year, she was selected for the final squad for the 2022 AFF Women's Championship in the Philippines that secured the country best finish to date.
[10][11] In 2023, during 2023 SEA Games hosted in Cambodia, Yon scored a brace against Laos in the 10th and 37th minute, securing the team's first victory against an opponent other than East Timor.