1989 MLB Earned Run Average by Team

The Los Angeles Dodgers led all of MLB in earned run average in 1989, with 2.95, 0.18 ahead of the Oakland Athletics. The average across 26 MLB teams is 3.71.

Led all of MLB in 1989 Los Angeles Dodgers 160 games

2.95 Earned Run Average 0.18 clear of Oakland Athletics

#	Team	League	G	ERA
1	Los Angeles Dodgers	NL	160	2.95
2	Oakland Athletics	AL	162	3.13
3	California Angels	AL	162	3.28
4	New York Mets	NL	162	3.30
4	San Francisco Giants	NL	162	3.30
6	St. Louis Cardinals	NL	164	3.37
7	San Diego Padres	NL	162	3.38
8	Chicago Cubs	NL	162	3.43
9	Montreal Expos	NL	162	3.48
10	Kansas City Royals	AL	162	3.55
11	Toronto Blue Jays	AL	162	3.59
12	Pittsburgh Pirates	NL	164	3.64
13	Cleveland Indians	AL	162	3.65
14	Houston Astros	NL	162	3.66
15	Atlanta Braves	NL	161	3.71
	MLB average			3.71
16	Cincinnati Reds	NL	162	3.74
17	Milwaukee Brewers	AL	162	3.80
18	Texas Rangers	AL	162	3.92
19	Baltimore Orioles	AL	162	4.00
20	Boston Red Sox	AL	162	4.01
20	Seattle Mariners	AL	162	4.01
22	Philadelphia Phillies	NL	163	4.07
23	Chicago White Sox	AL	161	4.25
24	Minnesota Twins	AL	162	4.28
25	Detroit Tigers	AL	162	4.54
25	New York Yankees	AL	161	4.54

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.