Let’s backup how I give out fielding in WAR. Every DH gets -2.25 wins per 700 PA of positional adjustment. Every bad-fielding 1B gets -1.25 of positional adjustment and -1.00 wins of poor fielding. Thus, whether Frank Thomas plays 1B or DH, he’ll get -2.25 wins (relative to average) in fielding+position. That’s his "defense" score.
Bill however proposes something else. And if I use his logic, then rather than -2.25 wins per 700 PA, I should do -2.25 wins per 460 outs.
— More DH and fielding | Tango @ THEBOOK This is your sabermetric wow moment for the day. Make sure and read through the comments (up to #24) for the punchline.