Here's my deal with the new defensive metrics, they don't work. There is a huge spread of talent when it comes to hitting, hitting with power, and speed. In other words, the SD of MLB ballplayers in those regards is pretty big. A big SD and the further away from the mythical average player the bigger the difference you make (bad or good) When it come to defense, speed plays a roll in as far as position one plays but you are much more likely to see a lumbering LF/RF than you are a track star (barring late inning replacements). In addition, the spread of ability when it comes to catching a ball at the major league level is not very wide. In other words, the vast majority of guys are all bunched together near the average. With a narrow SD like that there are fewer outliers. Maybe Abreu is one of them but even if he's 1 SD or even 1.5 SD from the average player that spread isn't very far, so he's not that much worse than the average guy. I'd say the biggest difference in ability will come with arm strength and accuracy. IMO, that's where the cream gets separated, but again the spread is probably is not that big. Now about IF v. OF. By the time the ball gets to the OF it's a hit or its caught. Most of the time its routine one way or the other. Sometimes a guy will have to go to the gap or head toward the wall to make a play, but that might happen 1 or 2 times a fortnight. Most of the time whatever damage was done was decided by the time the ball left the IF. The IF is different, however, guys who cannot cut it don't stay there long or they get moved to 1st. So again the spread is pretty narrow. The difference comes in as ability to get to a ball, knock a ball down, or dive substantially changes the outcome of a batted ball. That's not going to happen in the OF.