What's it locally about bank? It's got nothing that's wrong for martial arts sportspeople! (4,6)

'martial arts sportspeople' is the definition.
I can't tell whether this defines the answer.

'what's it locally about bank? it's got nothing that's wrong' is the wordplay.
I cannot really see how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is located in the answer.
'about' could be 'a' (abbreviation in Chambers) and 'a' is found within the answer.
'nothing' could be 'o' (O resembles 0) and 'o' is found in the answer.
'wrong' could be 'x' (X is used to mark something as incorrect) and 'x' is located in the answer.
This may be the basis of the clue (or it may be nonsense).

'for' is the link.

Can you help me to learn more?