If we start debating every possible Hall of Famer, we'll have opened this thread up to the point that it could eventually threaten "Baseball Trivia Game" as one of the longest running threads ever.
That said, I'll bite. Mattingly: yes. My #1 criterion is whether the player was one of the dominant players at his position for a goodly amount of time (5-7 years, I'd say). Mattingly qualifies under that criterion. Nine Gold Gloves. Plus great career stats. Didn't sustain long enough to get to the sexy numbers, but did enough to get in.
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