In 2012, she joined Monza and went on to win the national championship in 2014, they have also reached the final on two occasions although it ended in defeat.[1]
She made her international debut for Italy against Scotland in 2014 in Avezzano, her side won 27–3.[1] She contributed to Italy's qualification for the 2017 Women's Rugby World Cup during the 2016 Six Nations. She was subsequently included in the team that participated in the tournament in Ireland, Italy finished in ninth place overall.[2]
During the 2018 Six Nations, she scored a try in Italy's 22–15 victory over Wales in Cardiff, it was the first ever win for an Italian team at the Millennium Stadium. A week later, she also featured in her sides 26–12 win against Scotland at Stadio Plebiscito in Padua.[3]
She appeared for Italy in their November test against England in 2019.[4] After nine seasons playing for Monza, she joined Colorno in October 2021.[1][5]
She was a member of the Italian team that competed at the delayed 2021 Rugby World Cup in New Zealand.[6] They created history by being the first Italian team, in both the men and women, to reach a rugby quarter-final for the first time.[7]
Locatelli featured for Italy at the 2024 Six Nations Championship, she was the only Colorno player named in the side.[8][9] She missed the 2024 WXV tournament in September due to injury.[10]
She was named in Italy's squad for the Six Nations tournament on 5 March 2025.[11] On 11 August, she was named in the Italian side to the Women's Rugby World Cup in England.[12][13]
