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

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Streaks

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Improvements/declines

Pittsburgh Pirates : biggest year-to-year improvement/decline


Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 1917 -> 1918      18.9   (33.1  ->  52.0)
Decline:     1909 -> 1910     -16.2   (72.4  ->  56.2)
Last Year:   2025 -> 2026       6.8   (43.8  ->  50.6)