The format was modified for the 1909–10 season which was played in a league format. Nine clubs participated, playing each other both home and away. The split between Federal and Italian championship was not completely abolished, because, while unifying these tournaments, it was decided for the last time to assign two titles at the end of the season, In fact, the FIGC established that the first placed club in the general classification would be proclaimed Federal Champions (now turned into the main title), while the best placed club among the four "pure Italian teams" would be recognized as Italian Champions (now the secondary title), depending on the head-to-head matches. At the end of the season, Pro Vercelli and Inter finished equal first, so a playoff was needed to assign the Federal title (the Italian one was won by Pro Vercelli). This season was the first victory for Internazionale, who defeated Pro Vercelli 10-3 in the final. Even the Italian title won by Pro Vercelli was later forgotten.