Every trade of the season, chronological. The butterfly compares what each side's incoming players actually scored after the deal. The counterfactual line asks a different question — full-season value of players received minus players given — i.e. how much better or worse off each side is than a world where the trade never happened.
Every ownership spell, chained into a 38-week biography. Colored segments are owners (label = active FPts delivered during the spell); dark gaps are free agency. Search any of the players who were ever rostered.
Points a player scored after a manager dropped him — the league-wide generalisation of the One That Got Away award.