Baseball through the decades.

First book of instructions for baseball was published.

Apr 14, 1834

Pitchers may throw over hand.

Aug 24, 1838

Changed pitching speed and style.

Pitchers mound is moved to current distance of 60 feet 6 inches.

Apr 22, 1893

Set a new standard for baseball games.

First pentagon shaped home plate appears on the diamond.

May 20, 1900

It changed the strike zones.

First World Series game was played.

Oct 1, 1903

Added to the post season.

First Major League Night game was played.

May 24, 1935

Changed schedueling and it allowed working people to go to games.

Lou Gehrig is the first player to have his number retired.

Apr 24, 1939

Started a new way of honoring players.

Jackie Robinson is the first black player in the 20th century.

Apr 15, 1947

He sent a prescient for all African Americans.

Pitchers are credited for saves.

Feb 1, 1960

Improved statistical records.

Roger Clemens is the first pitcher to strike out 20 times in one game.

Apr 21, 1986

Broke a record. Set a higher gold standard.