Nice idea! I find the years somewhat misleading: how can I miss an Italian who was playing in 1982?! And then it was Baggio, who played his first Serie A games in 1986
It represents the active years. Baggio started in 1982 playing for L.R. Vicenza in Italy's third-highest league, Serie C. Yes, he played his first Serie A game in 1986, but that's not what we're looking for. A footballer's debut is usually determined by his first professional game, doesn't matter if that's in a highest league or not.