Can’t be bothered going back further because ball-by-ball records were more scant but in Richards’ last 10 centuries, only one came at a strike rate below 75, three of them came at a strike rate above 95 and 1 came at a strike rate approaching 200.
Not really sure anyone recent needs to be laying claim to having invented quick scoring at a high average. That’s without addressing Bradman who didn’t seem to have an issue with doing both.
I can't remember the test but Don was held back in the order because the wicket was wet, it dried out and he got out there and belted it everywhere apparently (I"m sure someone here has heard of it)



