Sunderland head to Birmingham City in the Championship today, for what feels like a crunch match at either end of the table. Sunderland face former boss Tony Mowbray and his Birmingham City side today. The Black Cats under Michael Beale fell to 10th place in the Championship table after a midweek defeat at Huddersfield Town, though a win today could lift them back into the top six. Blues meanwhile sit in 18th and gave themselves a six-point cushion to the bottom three after beating Blackburn Rovers in midweek. And a lot of the talk going into today is about Mowbray and Beale. Tony Mowbray coul…