[2] Diacci competed at the 2010 European Championships alongside Giulia Steingruber, Ariella Käslin, and Jennifer Senn, and they finished 6th in the team final.

[5] At the 2012 Osijek World Cup, Diacci won the bronze medal on the balance beam behind Giulia Steingruber and Vasiliki Millousi.

[13] She competed at the 2014 Stuttgart World Cup with Ilaria Käslin, Stefanie Siegenthaler, and Nicole Hitz, and they won the team bronze medal behind Germany and Russia.

[14] At the 2015 FIG World Cup in Doha, Diacci won the bronze medal on the uneven bars behind Youna Dufournet and Diana Bulimar.

[18] She then competed at the 2015 World Championships with Giulia Steingruber, Caterina Barloggio, Nicole Hitz, Ilaria Käslin, and Laura Schulte, and they finished 16th in the qualification round, which qualified them for the 2016 Olympic Test Event.