Rook vs. Rook and Knight endgame ... draws?
I am pretty sure that is a draw.
Here's what Dvoretsky says about the ending:
"A draw with rook against a rook and a knight is not a hard procedure. Even when your king is pressed to the edge of the board you can usually slip away from mating threats (sometimes with the help of a stalemate)."
Draw unless the side with the lone rook blunders.
agree with alexy777..blunders can't make either black or white lose.
Rook vs. Rook and Knight endgame ... draws?