
Originally Posted by
SABR Matt
1871-1879: Softball Era
This period is characterized by an infantile game with rules constantly in flux as players and owners decide what makes for the best kind of play. Most of the period is dominated by the rule that a batter shall request a location wehre the pitcher must throw the ball (set his own strikezone) and the pitcher's job was to lob the ball to the plate and let his fielders try to stop the batter from reaching. Scores were grotesquely inflated although league-ERAs were not due to the large unmber of errors charged in each game. Players played without proper equipment on fields that were terrible and dangerous in front of crowds that rarely numbered out of the few hundreds.
1880-1891: Enterprise Era
This is a period characterized by the explosive realization that baseball could be a profit-making big business entertainment medium. Massive expansions, team movements, barnstorming, unbalanced schedules, players changing teams for the oppoortunity to sign advertising contracts, player-managers protecting their own career interests, rigging of games to create good "scripts" for the fans and changing of the rules to enhance the excitement of the game. The fanchises were in such flux during this period that whole complex labeling schemes are needed to keep track of who's who. The result of the capitalistic expansion of the game was an incrimental improvement in the quality of the equipment (though true quality was still decades away), a move toward keeping more detailed official records and competing for championships, and a very watered down talent pool resulting in lopsided W-L records.
1892-1900: Premodern Stagnation
When baseball didn't sell on a grand scale right out of the box, all expanded leagues folded and the game contracted to 12 highly stagnant franchises who had very limited scouting range and relied much more heavily on attracting players to come to them. Barnstorming was far less common and players tended to settle in one place for longer. A gradual decline in the quality of play from the death of the AA to the death of the contraction of 1900 was brought about by the lack of an organized search for new talent.
1901-1919: Deadball Era
While it is true that the lively ball was first introduced in 1911, it was depreciated two years later and the deadball period continued nearly uninterrupted until the 1920 banning of trick pitches and livening of the ball. Before this year, the heavy results in an aggressive contact oriented game where the craft of fielding is finally honed to the point where the error rate drops to acceptible levels and the BABIP (batting average on balls in play) PLUMMETS. Low scoring games domniated by a small handful of superstar players, trick pitches, gamesmanship and aggression rule the period.
1920-1941: Liveball Era
Teams graudally realized that without trick pitches and with a lively ball, the best way to score lots of runs was to take walks and try to hit for power. The increased scoring that resulted makes pitching and fielding analysis more difficult and creates a severe inflation in the presumed skill of the offensive players from this period. Both the AL and NL suffer from bouts of disparity between elite dynastic teams and the rest...the NL suffers from a near total lack of quality major league players.
1942-1946: WWII Depression
The quality of the game takes a serious hit as many of the best players go off to fight for the US in WWII. The Negro Leagues during this period may have been almost as competitive as the Major Leagues. The statistics books are littered with player players that have a curious spike in productivity during this era.
1947-1960: Gradual Integration
A return to more of a liveball playing atmosphere as great players from the Negro Leagues and from the pre-war era now populate roster of most of the teams. HRs have never been more common, though walks and strikeout rates remain very low. Fans complain about the imbalances in attendence between the elite teams and the rest. Player movement from team to team is exceedingly rare and the rumblings of expansion and westward migration of the game begin.
1961-1973: Fielding/Pitching Spike
Contrary to popular description, the 1960s/early 70s spike in defensive excellence was NOT caused by the re-introduction of a dead ball. The ball hadn't changed...there was just an enormous surge of fielding talent (go through the lists of the great fielders at each position and you'll see what I mean...this decade or so was LOADED with defensive wizardry) and great young pitchers hit their stride all at once, while the hitting talent weakened. Things like these do in fact go in cycles...in today's game, there's been a new surge of great young pitchers that are starting to curtail the explosive scoring of the late 90s. While expansion was taking place, the game was slightly weaker but overall it continues to strengthen through the period in terms of competitive equity and player depth as integration truly begins to fill clubhouses with the best African American talent.
1974-1992: The Golden Age of Balanced Baseball
After the introduction of the DH to the AL, the lowering of the mound, and an infusion of brilliant latino position players into the player pool, balance returned to the game in this period. Scoring normalized and there was unparalelled parity following the beginning of free agency. This period showcases every style of successful team play (pitching/defense, aggressive baserunning/smallball, power/patience...etc) and is enormously deep in terms of talent thanks to the baby boom and the continued globalization of baseball.
1993-Today: Overexpansion and Decay
The game was perfectly balanced for a very long time...and then in their endless search for profit, the major league owners elected to expand two more times, liven the ball further and look the other way when Steroids became a serious problem in every clubhosue. It's still a great game today, and the surge of new young pitching talent is beginning to level the playing field, but there can be no doubt that it has been watered down a little since the 80s. There is far less in the way of varied styles of play, out of control spending by a handful of teams, and a number of franchises that are utterly without hope of being competitive.
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