While Preston's series on the best single seasons is on a break, thought it might be fun to look at the other end of the spectrum, and see who has provided the WORST years for the team, at each position.
Rules are a little different from Preston's lists. I took the worst single seasons in WAR from a Diamondback, and selected the worst at each position, where a player had more games at that spot than anywhere else, even if this was less than 50% of the overall total. I also didn't enforce any kind of minimum appearance: if you managed to be the worst at your position in only 40 games, more (Dark Side) power to you.