1980 MLB Earned Run Average by Team

The Houston Astros led all of MLB in earned run average in 1980, with 3.11, 0.15 ahead of the Los Angeles Dodgers. The average across 26 MLB teams is 3.84.

Led all of MLB in 1980 Houston Astros 163 games

3.11 Earned Run Average 0.15 clear of Los Angeles Dodgers

#	Team	League	G	ERA
1	Houston Astros	NL	163	3.11
2	Los Angeles Dodgers	NL	163	3.26
3	Philadelphia Phillies	NL	162	3.46
3	San Francisco Giants	NL	161	3.46
5	Montreal Expos	NL	162	3.48
6	Oakland Athletics	AL	162	3.49
7	Pittsburgh Pirates	NL	162	3.58
8	New York Yankees	AL	162	3.59
9	Baltimore Orioles	AL	162	3.64
10	San Diego Padres	NL	163	3.66
11	Milwaukee Brewers	AL	162	3.73
12	Atlanta Braves	NL	161	3.77
13	Kansas City Royals	AL	162	3.84
	MLB average			3.84
14	Cincinnati Reds	NL	163	3.85
15	New York Mets	NL	162	3.88
16	Chicago Cubs	NL	162	3.89
17	Chicago White Sox	AL	162	3.92
18	Minnesota Twins	AL	161	3.93
18	St. Louis Cardinals	NL	162	3.93
20	Texas Rangers	AL	163	4.04
21	Toronto Blue Jays	AL	162	4.20
22	Detroit Tigers	AL	163	4.26
23	Seattle Mariners	AL	163	4.38
24	Boston Red Sox	AL	160	4.39
25	California Angels	AL	160	4.52
26	Cleveland Indians	AL	160	4.69

A team's total is its players' numbers for the club added up, so a player traded mid-season counts for each team only what he did there. Rates such as ERA and batting average are worked out from the team's summed totals, not averaged across players.