Re: John Dewan - Defense worth 50% of offense
Not exactly a eureka moment there for Dewan. First off, comparing the difference between the best and worst in offense and defense is a pretty arbitrary measure of the actual value of those things.
Second, you're comparing one actual thing (offense) with one highly theoretical thing (runs saved/cost on defense). The best Dewan can say is he thinks that's where the defense landed.
Third, if he's right, then the real revelation isn't that defense is worth 50% of offense, it's that it's exactly as valuable as pitching. Half the game is scoring runs, half the game is preventing runs. If defense is more valuable than we thought, then the thing that becomes less valuable is pitching.
Baseball isn't a magic trick ... it doesn't get spoiled if you figure out how it works. - gonelong
I'm witchcrafting everybody.