FanGraphs Weekly Mailbag: April 18, 2026

What-ifs are a central part of being a baseball fan. We love to consider how differently things might’ve turned out if a star player hadn’t gotten hurt, or if a team had signed one free agent instead of another. Some what-ifs are the stuff of legend, like the fabled night in the late 1940s when, during a drunken dinner with Tom Yawkey at Toots Shor’s Midtown Manhattan joint, Yankees owner Dan Topping nearly traded Joe DiMaggio to the Red Sox for Ted Williams. Others aren’t revealed until decades later, like when Barry Bonds said on the Opening Night Netflix broadcast last month that he would’ve played for the Yankees instead of the Giants if George Steinbrenner hadn’t given him a take-it-or-leave-it offer.

We all have our own personal picks, too. Here are a few of mine: What if the New York City newspapers hadn’t gone on strike in 1978? What if Eric Gregg hadn’t been the home plate umpire for Livan Hernandez’s start in Game 5 of the 1997 NLCS? What if Dottie Hinson hadn’t dropped the ball, or Jimmy Dugan had just laid off the booze? Some of the most significant what-ifs could’ve had a massive impact on the world beyond baseball. What if the Black Sox hadn’t thrown the 1919 World Series? What if Curt Flood hadn’t challenged the reserve clause? What if George W. Bush had been named commissioner of baseball?

We won’t be examining any of the above what-ifs in this week’s mailbag, but three of the four questions we’re answering below are rooted in an alternate reality, one in which Mookie Betts was always a shortstop, Ford Frick didn’t run Bill Veeck out of baseball, and a starting pitcher was exactly league average at everything except throwing strikes. The lone non-hypothetical question, which is where we’ll begin, looks at whether teams have more success when they hit a grand slam than when they score at least four runs without one. But first, I’d like to remind you that 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.