Except your .040 BABIP doesn't explain the .150 OPS drop from 2013 to 2014. Using Joe's 2013 season, normalizing his BABIP from .380 to .340 is a difference of only 15 hits over the course of a season. But to get his OPS to drop 150 points, you need to remove 25 doubles from his 2013 season. That's 50 bases removed to see a 150 point drop in OPS. Joe's 2013 season would have gone from 35 doubles all the way down to just 10. Not only do you need more than 15 hits to get a drop that large, you need every one of those hits to count for extra bases, which we know just isn't a reality in the game. Your BABIP argument doesn't add up. A .040 swing in BABIP just isn't that much and, sure, it'll take a decent chunk out of a player's OPS season-over-season but nothing even close to 150 points. Something more like .075 of OPS at the upper end of the spectrum.