Roisin Upton became the first Irish hockey player, male or female, to score at an Olympic Games, converting a penalty corner in the ninth minute against South Africa on 24 July 2021. Ireland won 2-0, their first victory in women's hockey at the Games.
She played in all five matches in the women's hockey tournament at the Tokyo 2020 Olympic Games, where Ireland finished tenth.
Upton is from Raheen in Limerick and attended Crescent College Comprehensive, where she started playing hockey.