Rebecca Rixon was selected as part of the Maltese team for the 2018 Commonwealth Games on the Gold Coast in Queensland where she claimed a bronze medal in the Fours with Connie-Leigh Rixon (her sister), Rosemaree Rixon (her mother) and Sharon Callus.
In 2020 she was selected for the 2020 World Outdoors Bowls Championship in Australia but the event was cancelled due to Covid-19 pandemic. In 2022 she competed in the women's pairs and the Women's fours at the 2022 Commonwealth Games in Birmingham.
In 2023 she was selected as part of the team to represent Malta at the 2023 World Outdoor Bowls Championship. She participated in the Women's pairs and the Women's fours events. In the pairs partnering her sister, she reached the final against Malaysia where she won the silver medal after losing 15-11.