Hi there,
Just wanted to clarify how team (and managers) ranking work?
For example in Portugal this season Sporting won the league with only 4 draws and also won the CL, and it´s behind Aves in the ranking?!

Those rankings consider the last 100 matches played by the team/manager (if I’m not mistaken), so definitely more than one season, sometimes more than two. For every match you get a score depending on result (victory, draw or defeat) weighed by the opponent quality. That score then replaces the oldest score from 101 matches ago in your total. For new managers the scores are added up until there are 100 of them, then the next one will follow the replacement rule just described.