Belated thanks for the hint to 9, chris. For some reason that word for born had completely slipped my mind.
I'm a bit in two minds about the cricket stuff - where I grew up cricket really wasn't a thing, so I've had to learn a lot of the abbreviations and conventions. But that's more or less the same as what I've had to do for all the sailing-related stuff, and some of the cockney rhyming slang.
And I know I have my peculiarities as well - I absolutely adore classical references in crosswords, even though they are, if anything, even more exclusionary than cricket.