by MARCPELLETIER » Thu Aug 12, 2010 12:08 pm
Hi Guardman
I use the very basic linear weight run estimator, based on their projected performance over the course of a season.
see here for more details: http://www.tangotiger.net/bsrlwts.html
I then add an estimation of the value of the arm strength and of the additional cost of allowing extra at-bats to the offensive team.
BTW, in the estimation I provided, I assumed no injuries, and I assume that the player will play the whole season. If the coach does the logical decision to use defensive replacement, then of course, the defensive cost is reduced.