October Trends: How the 2020 Postseason Stacks Up
The ALCS between the Rays and Astros and the NLCS between the Dodgers and Braves have both produced tight, dramatic contests thus far, full of home runs and low scoring. As such, it’s a good time to check in on some of the trends that defined the brief 2020 season, and how they compare to what we’ve seen in the postseason, and how this October compares to recent regular and postseasons.
For starters, well, there are the starters. As I noted just two weeks into the abbreviated regular season, the length of the average start had fallen below five innings, and while it rose slightly over the remainder of the 2020 campaign, it still finished below five. Updating the table I included with that piece:
| Season | IP/GS | Change | K% | BB% | HR/9 | ERA | ERA- | FIP | FIP- |
|---|---|---|---|---|---|---|---|---|---|
| 2015 | 5.81 | -2.6% | 19.5% | 7.1% | 1.06 | 4.10 | 103 | 4.03 | 102 |
| 2016 | 5.65 | -2.8% | 20.2% | 7.7% | 1.24 | 4.34 | 104 | 4.3 | 103 |
| 2017 | 5.51 | -2.4% | 20.6% | 8.1% | 1.34 | 4.49 | 103 | 4.48 | 103 |
| 2018 | 5.36 | -2.8% | 21.6% | 8.0% | 1.21 | 4.19 | 101 | 4.21 | 101 |
| 2019 | 5.18 | -3.4% | 22.3% | 7.7% | 1.44 | 4.54 | 101 | 4.51 | 100 |
| 2020 | 4.78 | -7.7% | 22.9% | 8.3% | 1.30 | 4.46 | 100 | 4.46 | 100 |
The year-to-year drop in innings per start was the largest we’ve seen in this span, and indeed the largest we’ve seen in the Wild Card era, if not longer. Granted, it was a short season, with a short ramp-up, expanded rosters, as well as a ton of seven-inning doubleheaders, something we’ve never seen at the major league level before, but that wasn’t really factor when I checked in on the first two weeks; I used data through August 5, at which point only one seven-inning doubleheader had been played.
Anyway, through this year’s Wild Card and Division Series, starting pitcher workloads decreased even further:

Dan Szymborski