FanGraphs Weekly Mailbag: August 23, 2025

One of the funniest things to come out of this mailbag column so far occurred two weeks ago, when I wrote about the most replacement-level players of all time. I began that week’s mailbag by talking about questions that require both quantitative data and subjective analysis to answer, and I used the question “Who is the greatest baseball player of all time?” as an example. I made it quite clear that I wasn’t going to give my opinion on the subject; instead, I explained how people might consider the question and formulate their arguments, and in doing so, I mentioned a few of the best players ever. Nothing to it.
Except, of course, I should’ve known that you wonderful baseball sickos couldn’t resist hashing out that debate in the comments. A good number of you latched on to the part about how someone might give Barry Bonds the edge over Babe Ruth because “Bonds wouldn’t have been allowed to play during Ruth’s career.” Readers also made points about expansion and cited U.S. census numbers to compare the population sizes of major league baseball and the country. I truly did not expect any of that.
So maybe I should be prepared for anything with the question I answered to begin this week’s mailbag, which also deals with all-time great players and lineups. It’s quantitative for sure, but context is also necessary to understand why things turned out the way they did. It’s a fun one, so let’s get to it. Before we do, though, I’ll remind you all that while anyone can submit a question, this mailbag is exclusive to FanGraphs Members. If you aren’t yet a Member and would like to keep reading, you can sign up for a Membership here. It’s the best way to both experience the site and support our staff, and it comes with a bunch of other great benefits. Also, if you’d like to ask a question for an upcoming mailbag, send me an email at mailbag@fangraphs.com.
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Matt is the associate editor of FanGraphs. Previously, he was the baseball editor at Sports Illustrated. His work has appeared in The New York Times, Men’s Health, Baseball Prospectus, and Lindy’s Sports Magazine. Follow him on Twitter @ByMattMartell and Blue Sky @mattmartell.bsky.social.
That comment about “best player of all time” needing some context seems to also be relevant to the “team matchup with most WAR.” I’m pretty sure that four of the top 10 being Yankees-Athletics during a roughly 5-year span is mostly about (1) the distribution of talent across teams, which is kind of what this is about but also (2) how bad a replacement player was before integration.
Just for fun, I went to look up the Red Sox between 1925 and 1934. I set the minimum playing time to 200 PAs / innings and I don’t think I recognized a single name. They gave over a thousand PAs to a guy named Rabbit Warstler who couldn’t hit even hit doubles at Fenway (I had to look this up to make sure the wall was there then, and it was). They only had three pitchers with more than a thousand innings and one of them had an ERA- of 110. Can you imagine what the alternatives must have been?