The Diamondbacks center fielder may be the game’s most valuable prospect.

How good is an average center fielder?

All the details

David tries to estimate just how much the Red Sox should offer their new Japanese superstar.

A historical look at career trajectories after heavy usage before age 26.

Ah, runs. No wait, too many! Save some for tomorrow night! Why is it only my team that can’t score consistently?

David finally concludes his series on player size.

If he comes to the states, it’s far from clear how he’ll perform. Jeff looks at all the possibilities.

Where were you in ’72? Here we’ll find out what minor league aces were up to.

A look at how Roy Oswalt’s consistent performance may have made him less valuable than Chris Carpenter.