What Paul Derringer's 1939 Season Would Look Like in 1908
This page projects Paul Derringer's production from the 1939 run environment into the 1908 one, so the two can be compared directly. His actual line was 2.93 ERA, 1.18 WHIP. Translated to 1908 conditions, that becomes 1.64 ERA, 0.93 WHIP. The translation rescales counting stats by the ratio of league run scoring between the two eras; it does not attempt to model park, travel or integration effects.
- ERA (Earned Run Average):
- Earned runs allowed per nine innings pitched: (ER × 9) ÷ IP. The primary measure of pitching effectiveness.
- WHIP (Walks and Hits per Inning Pitched):
- Baserunners allowed per inning: (BB + H) ÷ IP. Under 1.00 is elite.
Data updated
What would Paul Derringer's 1939 season look like if he pitched in 1908 instead? Below, his real 1939 line sits beside a cross-era translation into 1908's run environment — and a live slider lets you drop that season into any year in MLB history.
Paul Derringer — 1939 (real)
Translated to 1908
Why the translated ERA looks better (lower): 1908 was a lower-offense run environment than 1939 (league ERA 4.29 → 2.40), so every pitcher's ERA scales down. It does not mean Paul Derringer would dominate modern hitters more — it is the same pitcher re-based to a lower-scoring league.
What this translation does not account for
This is a model, not a prediction. It re-expresses only Paul Derringer's rate stats against 1908's league run environment — and nothing else. It does not account for the depth of competition (integration, international talent, a vastly larger athlete pool), pitch velocity, modern pitch arsenals (sliders, splitters, sweepers), strength and conditioning, or in-game adjustments and advanced scouting.
So a higher translated line means 1908 was simply a higher-offense era — not a claim that Paul Derringer would actually perform better against today's pitching.
Rate Stats: Real vs. Translated
These rate stats are re-expressed by holding Paul Derringer's performance relative to his league constant and re-basing it on 1908's averages (the same idea behind OPS+/ERA+).
| Stat | 1939 (real) | 1908 (modeled) |
|---|---|---|
| ERA | 2.93 | 1.64 |
| WHIP | 1.18 | 0.93 |
Counting Stats (1939, as played)
| Wins | 25 |
| Losses | 7 |
| Games | 38 |
| Games Started | 35 |
| Strikeouts | 128 |
| Shutouts | 5 |
| Complete Games | 28 |
| Innings | 301.0 |
Why counting totals aren't translated: scaling a counting stat by the league environment ratio massively over-inflates era outliers — e.g. a 1920s slugger's home runs would balloon to absurd modern totals. So home runs, RBI, wins, strikeouts and the like are shown exactly as Paul Derringer produced them.
Verdict
This is a model, not a prediction. In the Deadball era — a pitcher-dominated, nearly home-run-free game — a run environment easier to pitch in than 1939's (league ERA 4.29 → 2.40) — one reasoned way to express Paul Derringer's 1939 season is roughly a 1.64 ERA and 0.93 WHIP. That holds his dominance relative to his league constant and re-bases it on 1908's averages; it is not a claim that Paul Derringer would actually post those numbers. His counting totals (25 W, 128 K) are shown exactly as he pitched them, because scaling counting stats across eras wildly inflates outliers.
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Paul Derringer in Other Eras
View Paul Derringer's full profile → · Browse all era translations →
What Paul Derringer's 1939 Season Would Look Like in 1908: Frequently Asked Questions
- What would Paul Derringer hit in the 1908?
- Translated into the 1908 run environment, Paul Derringer's line becomes 1.64 ERA, 0.93 WHIP.
- What did Paul Derringer actually do?
- His real line was 2.93 ERA, 1.18 WHIP in 1939, compiled in the 1939 season.
- How does the era translator work?
- It rescales a player's counting statistics by the ratio of league-wide run scoring between the two eras, holding his playing time constant. It does not model park effects, travel, equipment or the integration of the leagues.