Movement

Divisions are not one connected game graph. Cross-division games are under 1% of contests, far too few to place D1, D2 and D3 on a shared rating scale. So the bridge between levels is players, observed in both, whose production before and after gives the level adjustment directly. These 665 are that sample. The summary, the up and down counts and the fitted ladder are on About.

Confidence caveat. There is no canonical player id yet, so these are matched on name, with same-season appearances at two teams excluded as necessarily two people. High confidence additionally requires a surname appearing exactly once in the whole population. The true count sits between the strict figure and the full one. A few rows are tagged overlapping, meaning the two spells run into each other in time. Those are not one move and are quite likely two people sharing a name, so read the from and to columns on those rows as two spells rather than as a direction.