In the
women's individual foil at the
2012 Summer Olympics, she denied her compatriot
Valentina Vezzali her fourth successive gold medal in the competition by defeating her 15–12 in the all-Italian semi-finals. She went on to win the silver medal in the event, losing in extra time to another compatriot
Elisa Di Francisca. At the
2013 and
2014 World Championships, Errigo won 2 consecutive gold medals in the individual event. After the
2016 Rio de Janeiro Olympic Games, where she failed to win a medal, Errigo announced an interest in qualifying for both foil and sabre at the
2020 Tokyo Olympic Games. She later won a silver medal at the sabre grand prix in Cancún, Mexico, in December 2017. On 13 June 2024, she received the tricolor flag from the president of Italy,
Sergio Mattarella, together with the Olympic high jump champion
Gianmarco Tamberi for the
Paris 2024 Olympic Games. ==Medal record==