There's data on the correlation between hand size and national/international acclaim here: http://smallpianokeyboards.org/hand-span-data-recent-australian-study

There's data on the correlation between hand size and national/international acclaim here: http://smallpianokeyboards.org/hand-span-data-recent-australian-study/ http://smallpianokeyboards.org/hand-span-data-recent-austral.... From this, it seems clear that internationally acclaimed pianists typically have quite large hands.