Madhi19 Reddit new post madhi19 on TIL Emma Watson almost wasn't Hermione in the Half-Blood Prince. She had considered not returning but decided that she wouldn't be able to watch someone else play Hermione.

I think he won a chess game once and he been bragging about it ever since.

from overview for madhi19 http://www.reddit.com/r/todayilearned/comments/2qrwlr/til_emma_watson_almost_wasnt_hermione_in_the/cn98sfp