Italian translation: campione in carica/detentore del titolo
Login or register (free and only takes a few minutes) to participate in this question.
You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.
I don't know Italian, but "titlist" means the holder of a title. So twenty of twenty-one cars driven by holders of SCCA titles were fitted with Champion spark plugs.//While I was posting this, similar answers appeared in Italian.