1890 MLB Earned Run Average by Team
Every team's total, added up from its players' lines. Earned runs allowed per nine innings
The Louisville Colonels led all of MLB in earned run average in 1890, with 2.57, 0.22 ahead of the Cincinnati Reds. The average across 25 MLB teams is 3.91.
Led all of MLB in 1890
Louisville Colonels
134 games
2.57
Earned Run Average
0.22 clear of Cincinnati Reds
| # | Team | League | G | ERA |
|---|---|---|---|---|
| 1 | Louisville Colonels | AA | 134 | 2.57 |
| 2 |
 Cincinnati Reds
|
NL | 134 | 2.79 |
| 3 |
 Boston Beaneaters
|
NL | 134 | 2.93 |
| 4 | Columbus Solons | AA | 140 | 2.99 |
| 5 |
 Brooklyn Bridegrooms
|
NL | 129 | 3.06 |
| 5 |
 New York Giants
|
NL | 135 | 3.06 |
| 7 |
 Chicago Colts
|
NL | 139 | 3.24 |
| 8 |
 Philadelphia Phillies
|
NL | 133 | 3.32 |
| 9 | Chicago Pirates | PL | 138 | 3.39 |
| 10 | Rochester Broncos | AA | 133 | 3.56 |
| 10 | Toledo Maumees | AA | 134 | 3.56 |
| 12 |
 St. Louis Browns
|
AA | 138 | 3.67 |
| 13 | Boston Reds | PL | 133 | 3.73 |
| MLB average | 3.91 | |||
| 14 | Brooklyn Ward's Wonders | PL | 133 | 3.95 |
| 15 | Baltimore Orioles | AA | 38 | 4.00 |
| 16 | Philadelphia Athletics | PL | 132 | 4.05 |
| 17 | Cleveland Spiders | NL | 136 | 4.13 |
| 18 | New York Giants | PL | 132 | 4.17 |
| 19 | Cleveland Infants | PL | 131 | 4.23 |
| 20 | Pittsburgh Burghers | PL | 131 | 4.27 |
| 21 | Brooklyn Gladiators | AA | 100 | 4.71 |
| 22 | Syracuse Stars | AA | 127 | 4.98 |
| 23 | Philadelphia Athletics | AA | 132 | 5.22 |
| 24 |
 Pittsburg Alleghenys
|
NL | 138 | 5.97 |
| 25 | Buffalo Bisons | PL | 134 | 6.11 |
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.