perhaps another method, and i've seen snippets of this across the internet, would be to come up with a wins above contract type of figure. basically, you would assume there to be three different types of players out there - pre-arbitration, mid arbitration, and post-arbitration - which have different wins/$ rates. the pre-arbitration list would be rookies, two year players, and three year players, right? so you figure, for a given year, what the total WARP3 for these players is, and their total salary, and divide to get a wins/$ rate for their salary. actually, to be more correct, you'd prolly do salary above league minimum (essentially replacement level) since you're looking at wins above replacement, and this might keep em on the same scale. for the mid-arbitration players, you'd look to all the players who are in their arbitration-eligible years, and do the same thing - total wins above replacement divided by total salary above league minimum. then repeat again with all players beyond their 6th year of service - all those who are eligible for free agency. these three populations get paid at markedly different rates, i'm sure you'd agree, making comparisons really only valid within the groups. then you could take any player in any given year, and figure out which group he belongs to, and figure out, based on his salary, how many wins above replacement you would expect him to have. the difference between this and his salary would tell you the approximate value you're getting from the chap. mind you, upon further reflection, i think this might be more of a measure of how effective and efficient your GM is as opposed to being able to measure the merits of one side of a trade against the other... but you tell me. i do know that this would be virtually impossible, i think, to figure out without working directly for baseball prospectus, and having access to their entire database instead of typing in one-by-one all the player names to get the WARP3 figures... (is such a thing available, btw, or is the manual entry 'DT cards' the only way to get at the WARP3 data?)... so the other way i've described sure looks better right about now!