Miller deserves to be in and has a chance.
As far as players go, I agree with Kep75. And I hate that no players get in this way. That said, this is a tough list. None leap out above the others, and I predict, with only two votes per voter, none will get in this year. Here're my thoughts:
Steve Garvey -- great player, an MVP, and four Gold Gloves, never felt like a dominant player of his generation, though, HOVG
Tommy John -- 288 wins, great career, and surgery that changed the game, but not dominating, not a top three or four picture of his era, right on the edge
Don Mattingly -- dominating for about six years; an MVP and seven Gold Gloves, I'd probably put him in
Marvin Miller -- yes, completely altered the game
Jack Morris -- great player, HOVG, never above third in Cy Young voting, 3.90 era, nope
Dale Murphy -- seven great years, two dominating ones, surrounded by some very good ones, longevity, five gold gloves, I think he should be in, by the skin of his teeth
Dave Parker -- about seven great years, an MVP, some gold gloves, 2700 hits and a .290 career average, as feared a hitter as there was for awhile, probably yes
Ted Simmons -- ooh these are tough, underrated catcher, one of the four or five best catchers in the game during his era (Bench, Fisk, Munson...Freehan? Simmons, overlapped with Carter, too), never a true MVP candidate, though; solid hitter, but not quaking in your boots like Parker and Murphy. For awhile, I thought he really belonged, just because catchers are underrepresented, now I'm not sure. Right on the edge.
Luis Tiant -- great player, only four or five truly great years, never close to a Cy Young, always a top ten pitcher, but never THE pitcher, I'm thinking no
Alan Trammell -- great player, four gold gloves, on and off MVP votes, a very good, but rarely terrifying hitter, I'll get grief for this, but I think HOVG
I wouldn't be upset with any of these guys getting in. And I truly wish the Modern Era or other "veteran's committee" would vote someone in. But only Miller has a chance.
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