A dismal good morning to you, Old Gal.
Thank you for kind comments regarding Adam's doctorate. As you can imagine, he has one very proud father.
To assist you regarding this clue, and without giving you the actual answer, is going to be difficult. In the United Kingdom, the player who wears the number 10 shirt in rugby union is called a fly half or stand off half; in Australia and New Zealand, that player is called this - and it's a fraction which, if measured in eighths, is the one above a half!
With best wishes,
Caravaggio