The table lists the positions of teams after each week of matches.
In order to preserve chronological evolvements, any postponed matches are not included to the round at which they were originally scheduled, but added to the full round they were played immediately afterwards.
The higher-placed team played at home for the second leg.
If the teams were tied on aggregate, the lower-placed team was relegated to Serie C, unless the teams finished tied on points after the regular season, in which case the winner was decided by extra time and a penalty shoot-out if necessary.
1 Player kept 1 clean sheet in the play-offs.