JAWS and the 2020 bWAR Update, Part 2
Josh Donaldson is one of the game’s elite two-way players, but like the late Ernie Lombardi, he received rude treatment when it came to Baseball-Reference’s latest update to its version of WAR. Last week I began a breakdown of B-Ref’s influx of new data, which resulted in alterations to five different areas of its version of WAR, some aspects of which affect players as far back as 1904 and others as recent as last season. The introduction of detailed play-by-play baserunning and caught stealing data from the 1930s and ’40s, for example, cost Lombardi — a heavy-hitting Hall of Fame catcher who played from 1934-47 — a whopping 7.3 WAR. Donaldson took the largest hit among contemporary players, losing 3.8 WAR via changes in the way Defensive Run Saved is calculated. For the 34-year-old third baseman, the loss adds a bit of insult to the injury of this delayed season, which won’t make it any easier for him to build what is admittedly a long-shot case for the Hall of Fame.
B-Ref’s version of WAR is different from that of FanGraphs, but as bWAR is the currency for JAWS, it’s of particular interest to me. While the Hall of Fame itself is as closed right now as any museum due to the COVID-19 pandemic, Hall arguments are never out of season, nor is taking stock of greatness, particularly when it provides a diversion from considering stockpiles of toilet paper and shortages of N95 masks. B-Ref’s adjustments are hardly unprecedented for the site, which adds new data annually. The earliest boundaries for game logs and play-by-play data have moved backwards by decades over the years, for example, and last year’s big-ticket addition was a major update to catchers’ defensive statistics for the 1890-1952 period.
Reordered for their chronological effect, this year’s update has incorporated the following:
- New Retrosheet Game Logs (1904-07)
- Caught Stealing Totals from Game Logs (1926-40)
- Baserunning and Double Plays from play-by-play data (1931-47)
- Defensive Runs Saved changes (2013-19)
- Park factor changes (2018)
As I noted last week, the career WAR totals of 11 Hall of Fame position players swung by at least 2.5 WAR, some positive and others negative. Where Lombardi was the biggest loser in that update, shortstop Arky Vaughan was the biggest gainer from among the enshrined; his 5.1-WAR gain was the second-largest swing overall, 0.1 less than that of three-time All-Star Lonny Frey (a teammate of Lombardi’s with the Reds from 1938-41). Because nobody needed 3,000 words from me in the first installment of a series as we await the green light on the 2020 season, I didn’t publish the table of the position-by-position changes or delve into the effects on other groups of players, such as Donaldson and his contemporaries. This time around, we’ll do just that. Read the rest of this entry »
