The manager ranking has been retired
This page used to carry an Elo-style ranking of football managers, built the same way as the club ranking but crediting results to whoever was in the dugout.
It depended on a feed of manager appointments and departures that no longer exists. Without it we cannot keep the ranking current, and numbers that stop being true without saying so are worse than no numbers, so we retired it.
The club rankings it was derived from are unaffected and still update every Tuesday.