Good stuff. I'm not even so sure that the defense is completely to blame. I think they are to blame some, for sure. They just haven't been as sharp defensively. And that's not something I expect to continue. There are a lot of really good defenders on this team. And I suspect they'll get their horsefeathers together. But, if you look at the expected stats at https://www.xstats.org/ that Andrew Perpetua keeps, his expected stats are also based off of batted ball direction, which Baseball Savant's aren't. Savant's method only looks at launch angle and exit velocity. Pepetua's calculations have Lester's and Arrieta's xBA and xwOBA higher than Savant's, though not as high as their actual numbers. So I think another problem is that balls are just finding holes -- or finding where there usually are holes. Add them both together, porous defense and finding holes, and then realize it's a small sample size and weird stuff can happen.