This led me to think of Muggsy Bogues and Earl Boykins, both well under 6 ft. and credible, memorable players in the NBA. The very fact of their under-sizedness made their playing feel exciting and maybe even brave. Also--and no disrespect intended--a little comic, but in a good way.
Since this is the third paragraph, and I have a pile of examples, one might hope for a conclusion, but one will remain dissatisfied, since all my possible conclusions seem to veer for a cliche. Instead, I offer this,
and I do hope you are fully inspired.