mcubed.net : MLB : Athletics : biggest year-to-year improvement/decline

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MLB

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NBA

NBA teams NBA Finals Series Records Standings Monthly Best/Worst Franchise Wins Streaks Playoffs

NHL

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NCAA Hoops

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NCAA Football

2026 Rankings Team vs. Team Series Records Team/Conference vs. Conference Series Records Conference Changes Over the Years All-time Winning Streaks All-time Losing Streaks Team vs. Team Winning Streaks Conference Championship games Win Charts Bowl Games Pick a Team Pick a Year Is my team better than yours? Best of an Era

NCAA

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Golf

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NASCAR

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Soccer

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Bowling

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Teams

World Series

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Series Records

Standings

Monthly

Pick a Year Best/Worst Calendar Months

Best/worst

Best Regular Seasons Worst Regular Seasons Biggest Year-to-Year Improvements Biggest Year-to-Year Declines Best Records Throughout Season Worst Records Throughout Season

Franchise wins

Best of an Era All time 2020's 2010's 2000's 1990's 1980's 1970's 1960's 1950's 1940's 1930's 1920's 1910's 1900's

Streaks

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Playoffs

Most Frequent Playoff Match-ups Consecutive Season Playoff Match-ups Game 7 Franchise Records Playoff Series Scoring Difference Playoff Chances By Record Best of 7 Series Progression

MLB:Athletics links>

Streaks

Years in/out playoffs; above/below .500 Winning streaks Losing streaks Winning streaks against other franchises Losing streaks against other franchises

Division wins

Coaches

Improvements/declines

Athletics : biggest year-to-year improvement/decline


Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 1946 -> 1947      18.8   (31.8  ->  50.6)
Decline:     1914 -> 1915     -36.8   (65.1  ->  28.3)
Last Year:   2025 -> 2026      -7.4   (46.9  ->  39.5)