Crossword Genius

After several ties, it may actually be won (3)

Ross

I believe the answer is:

cup

I'm a little stuck... Click here to teach me more about this clue!

'won' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for cup that I've seen before include "Beaker" , "Award; mug" , "'There's many a slip 'twixt ... and lip.'" , "McCarthy, Walker or Maguire" , "Container to drink from - prize" .)

I've seen this clue in the Evening Standard.
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