League Index
 
Bold indicates World Championship Champion
 
Lg LgAvg LgERA Champion Year Champion LgERA LgAvg Lg
NL .288 3.89 Boston Red Stockings
1871  
NL .275 2.92 Washington Olympics
1872  
NL .308 3.36 Baltimore Canaries
1873  
NL .276 2.87 Baltimore Canaries
1874  
NL .269 2.78 St. Louis B Brown Stockin
1875  
NL .278 2.87 Chicago White Stockings
1876  
NL .289 3.57 Chicago White Stockings
1877  
NL .266 2.75 Boston Red Caps
1878  
NL .275 3.55 Boston Red Caps
1879  
NL .254 3.05 Boston Red Caps
1880  
NL .259 3.28 Providence Grays
1881  
NL .258 3.22 Philadelphia (A) Athletic
1882  
NL .261 3.17 New York (A) Metropolitan
1883  
NL .248 3.08 Brooklyn (A) Atlantics
1884  
NL .248 3.39 Providence Grays
1885  
NL .255 3.28 St. Louis (A) Browns
1886  
NL .318 4.92 Chicago White Stockings
1887  
NL .249 2.92 Detroit Wolverines
1888  
NL .267 3.76 St. Louis (A) Browns
1889  
NL .254 2.96 Philadelphia (A) Athletic
1890  
NL .257 3.28 St. Louis (A) Browns
1891