勝負は下駄を履くまでわからない

Reading
しょうぶはげたをはくまでわからない
English
It's not over until the fat lady sings
Notes
You don't know the outcome of the match勝負 until people are putting履 on their [wooden sandals>下駄 to go home
Origin
スポーツ
proverbsKotoKen 3