#2 hitter can play 1B. Leadoff hitter can be a 1B too like the Cardinals do with Matt Carpenter. The point here is that the 1B position has to produce on offense. Ditto for your #2 hitter.
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I use WAR all the time around here. It's one of many useful stats. I "thought" it was a valid stat to use on RZ. Again, do you feel it's not a good stat to use in this instance? If so then why not?