FanGraphs Weekly Mailbag: September 12, 2026

In last week’s mailbag, I ran through the list of teams that posted losing seasons and finished with positive run differentials. The question was inspired by this year’s Tigers, who were 64-75 (.460) when I wrote my response the previous afternoon, despite outscoring their opponents by 0.34 runs per game. I wrapped up my answer by mentioning that the Tigers could become the first team ever to lose 90 or more games during a season in which they scored more runs than they allowed. So before we get to this week’s mailbag, I’d like to provide an update on Detroit’s chance at history.
As of Friday afternoon, the Tigers had gone 3-4 in their past seven games, bringing their overall record to 67-79 (.459) with a per-game run differential of 0.377. Fittingly, all four of their losses in that span were decided by one run, while their margin of victory in their three wins was +12. They are the worst team in the majors this season in one-run games, with a record of 14-27 (.341). Their .459 winning percentage on the season puts them on pace for between 87 and 88 losses this year.
This week, I’ll answer the inverse of that question and discuss teams that finished above .500 with negative run differentials. We’ll also see how different baseball would be if teams could use a DH for every position, find the teams that score the most runs on bases-loaded walks and hit-by-pitches, and look at how teams should deploy their relievers in the ninth and 10th innings of tie games. 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. Read the rest of this entry »






