Non-out play made by an infielder certainly has a lower run value than a non-out play made by an outfielder but the difference isn't as large as you might think. First, we can simply look at the average run value of typical baseball events (I'll keep the numbers simple): out: -.3 1B: .5 2B: .8 So when you add it up, a non-out that results in a single is worth around .8 runs and one that results in a double is around 1.1 runs, relative to making an out. Second, while more non-outs by an outfielder results in a double than for an infielder, it's not 100%/0%, obviously. A 3B showing poor range to his right is obviously going to up the number of doubles he gives up. So maybe a play not made by an infielder is worth something like .9 runs and for an oufielder, 1 run. I don't know what the exact numbers are but the point is, it's not insignificant but it's not huge either. Maybe the more important point is, fielding opportunities vary dramatically by position. If lack of range causes you to get to 10% less balls, you have to know the total number of balls that went through your zone to estimate a run value of being slower. Long story short, I don't think you can make the blanket statement that range in the outfield is more valuable than in the infield. We'd have to look at it by position and even then, it might be hard to draw any firm conclusions.