I agree with you. But the old player skills/young player skills argument doesn't. Doesn't Crawford have young player skills? Avg/contact, speed, defense. Now, I would think that speed and defense are the first to go in old age - so then why are they more valuable and projectable? Jim Edmonds had old player skills - OBP, power, lumbery. Yet, we was able to stick into his late 30s. Can someone please give me a run-down of this argument before I go cross-eyed? he was not lumbery. maybe he became lumbery in his later years but he was a very good fielder for a long time. plus he always hit around .300. the traditional "old player skills" guy is like adam dunn, where most of their value is tied up in a good batting eye and power. as for the argument as to why those players do not age well, it's because guys who survive on skills like power and batting eye are generally not great athletes, so their athletic ability is already marginal, and when they age a little bit their defense and speed go from "poor" to "atrocious." plus they don't hit for high average, suggesting marginal hitting ability, and if they lose a little bat speed their average drops even more and they lose some of the power, so pitchers aren't so afraid to pitch to them any more, and they don't walk as much. the main thing to take out of the bill james theory of old player skills and young player skills is that players who get by on old player skills at a young age tend to peak early and decline quickly.