Hands Down

This basically means to score a victory without much work. One version is with horse racing the jockey doesn't even have to lift his hands to guide his horse if he's way out in front. Another one is for boxing in which the opponent is a pushover and so the winner doesn't even have to raise his hands to protect himself.

Pass the Buck

Anyone who avoids making decisions or accepting responsibility is said to pass the buck. This all starts from the old days of card playing in which piece of buckshot is placed before someone who has the deal. The dealer has a lot of responsibility on determining the game's format. If a cautious player doesn't want to take on this responsibility, he's allowed to "pass the buck" to the next player who will be the dealer.

.