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 Changing the Rules Chronology of Changes to Major League Baseball Official Rules Table H: Rule Changes 1910-1919 |
| Table H: Rule Changes 1910-1919 | ||
| DATE | RULE CHANGE | Rule |
| 1910 | The umpire organization chart is established. The plate umpire-the one who judges balls and strikes-is appointed the umpire-in-chief, and the others are field umpires. An umpire may not interfere with or criticize his colleagues' decisions. Only the umpire-in-chief may declare the game a forfeit. | 9.04 |
| 1910 | The captain of a team must notify the umpire-in-chief of any substitution. | 3.03 |
| 1910 | An umpire must warn players on the bench for excessive yelling before he can fine or otherwise punish them for it. | 9.01D |
| 1910 | Before a game begins, the umpire must announce any special ground rules. | 9.04 |
| 1910 | The cork-center ball is adopted for regular use (it had been used in the previous year for occasional play). | 1.09 |
| 1912 | Earned runs are charged to a pitcher when a player scores by means of safe hits, sacrifice hits, bases on balls, hit batters, wild pitches, and balks. | 10.18 |
| 1914 | In the case of fire, panic, or storm, the umpire does not have to wait until the pitcher has the ball on the mound to call a time-out. | 9.04 |
| 1917 | Earned runs are also charged to a pitcher when a player scores by means of a stolen base. | 10.18 |
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