BeaneCounter

OOTP Baseball Statistics by ItsHellboy

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Run Environment Viewer

MLB league averages 1910-2025 — how the run environment shapes stats across eras

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Batting:Pitching:
2010 (Baseline)Post-Testing Era
AVG: 0.261
OBP: 0.325
SLG: 0.403
OPS: 0.728
BABIP: 0.290
BB%: 8.3
HR/PA: 0.014
ERA: 4.08
WHIP: 1.340
K/9: 6.9
BB/9: 3.3
HR/9: 0.47
Showing: AVG — % deviation from 2010
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
2020

Historical Context

1920Live-ball era begins — ban on spitball, new ball specs
1947Integration begins (Jackie Robinson)
1961-62AL & NL expansion — diluted pitching
1968Year of the Pitcher — historic low offense
1969Mound lowered from 15in to 10in
1973DH introduced in American League
1993Expansion (Marlins, Rockies) — offense boom
1994Strike-shortened season (no World Series)
2006Enhanced PED testing takes effect
2020COVID shortened 60-game season
2023Pitch clock, larger bases, shift ban
2025Continued K rate increase, offense dip

Source: Baseball Reference (baseball-reference.com)