Definition of "sabermetric"

Me three. I never have quite understood all the "three true outcomes" fetish around here. I mean, I know that building an offense around walks and 3-run jacks embodies the Sabermetric Virtues, and especially in today's conditions that's the way to win, but man, it sure leads to some slow, boring games.

2002 April 18, Perry, “Re: To all you Oakland A's fans...”, in rec.sport.baseball‎ (Usenet)