Around the EFL: Why are Coventry and Sunderland rivals?

Geography has zero to do with one of the strangest rivalries in England

Coventry’s 2-1 victory over Sunderland on Saturday was the installment in one of the most intense rivalries that nobody outside supporters of the two clubs are aware of. But it’s a very big deal to older supporters of both clubs, though to younger supporters, it’s probably just the stuff of lore passed down from the previous generation.

So why exactly …