Mr Petrecca's blunders included misidentifying Milan's San Siro stadium as Rome's Stadio Olimpico and mistaking Italian actress Matilda De Angelis for Mariah Carey.
He also incorrectly identified International Olympic Committee President Kirsty Coventry as the daughter of Italian President Sergio Mattarella and failed to recognise members of Italy's world champion volleyball teams.
In response, RaiSport journalists announced protest measures, including withholding bylines until the end of the Winter Olympics and a three-day strike after the Games conclude.
Mr Petrecca has since been removed from the closing ceremony commentary team, and the channel's internal union expressed widespread embarrassment over the incident.
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