Key
| Year | Links to the corresponding "year in baseball" or "Major League Baseball season" article |
| Leader | Player with the lowest earned run average (ERA) in the league |
| Runner-up | Player with the second-best ERA in the league |
| League | Denoted only for players outside of the modern major leagues |
| † | Member of the National Baseball Hall of Fame and Museum |
Read more about this topic: List Of Major League Baseball Earned Run Average Champions
Famous quotes containing the word key:
“Now narrow minds can develop as well through persecution as through benevolence; they can assure themselves of their power by tyrannizing cruelly or beneficently over others; they go the way their nature guides them. Add to this the guidance of interest, and you will have the key to most social riddles.”
—Honoré De Balzac (1799–1850)
“Woe to you lawyers! For you have taken away the key of knowledge; you did not enter yourselves, and you hindered those who were entering.”
—Bible: New Testament, Luke 11:52.
“There are two kinds of timidity—timidity of mind, and timidity of the nerves; physical timidity, and moral timidity. Each is independent of the other. The body may be frightened and quake while the mind remains calm and bold, and vice versë. This is the key to many eccentricities of conduct. When both kinds meet in the same man he will be good for nothing all his life.”
—Honoré De Balzac (1799–1850)