Who said you can't blame both? Walking a guy to start the ninth inning with a 1-0 lead rarely turns out well.
Walt gets some blame for the current roster construction and failure to Dusty proof his roster at times
Dusty is a great people manager, but 59-48 with a loaded roster in a weak league and two postseason flame outs
All this being said, if we can get into the playoffs and survive the 50/50 game. This team will be dangerous.