Via THT, we curently stand at -36 plays made. Second-worst is Pittsburgh, at -29, while third-worst is Kansas City, at -21. The difference between the Mariners' and the Blue Jays' defenses so far has been roughly 60 runs, or about 185 runs over a full season.
It's too bad that we promoted Jeremy Reed to play a corner every few days, because I'm kind of curious just how bad this could get without him.