Opta Sports @OptaJoe
19.6% - Mick McCarthy has the lowest win % of any manager to take charge of 100+ PL games. Axed
For all of the focus on managers in the English game, perhaps rightly so given its unique history, you need good players too. He had a few in Fletcher, Kightly, O'Hara, and Jarvis, but crucially, Roger Johnson has been mostly awful and Hennessey let him down at key moments this season.
McCarthy was also in charge of the Sunderland team that went down with what I believe was/is a Premier League record-low points total. It is hard to say if bad teams are as bad as they are because the players aren't good enough or because the manager isn't.
I guess it doesn't matter now. Maybe someone else can keep them up. Good luck to Mick, seems a very nice man.