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研究生： 陳誼庭
Chen, Yi-Ting
論文名稱： 大聯盟投球計時規則對球員表現之影響
The Effect of Pitch Clock on Players’ Performance in the MLB
指導教授： 林世昌
Lin, Eric S.
口試委員: 林琨瀚
陳正倉
曾雅雯
學位類別： 碩士
Master
系所名稱： 科技管理學院 - 經濟學系
Department of Economics
論文出版年： 2024
畢業學年度： 112
語文別： 中文
論文頁數： 41
中文關鍵詞： 美國職棒大聯盟 、球員表現 、投球計時規則
外文關鍵詞： Pitch Clock, Rule Change
相關次數： 點閱：19  下載：0 
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    • 本研究旨在探討投球計時規則對職業棒球球員個人統計數據的影響，以及此規則是否會使特定球員具備優勢。本文採用美國職棒大聯盟 2022 年至 2023 年例行賽的球員進階數據，並使用多元線性迴歸模型對打者及投手進行分析。本文亦將投手依投球節奏習慣進行分群，並區分為中繼及先發投手。研究結果如下:第一，2023 年投球計時規則提升打者整體表現。第二，相同投球節奏習慣的先發投手與中繼投手在投球計時規則下的表現存在差異。投球節奏較慢的中繼投手在獨立防禦率(ERA)及三振數上有顯著下滑，符合投球計時規則將損害投手表現的預期，而先發投手的表現則沒有顯著變化。第三，中繼投手在賽季初期的控球和 防禦表現有所下滑，但隨著賽季的進行，這些影響逐漸減弱。本研究提供對2023 年美國職棒大聯盟投球計時規則較全面的分析，並對球員表現變化做出相關詮釋，除可作為大聯盟官方規則改變的依據，亦可提供職業球團因應大聯盟規則改變選取球員之參考。

    This study aims to measure the impact of the pitch clock on individual statistics of professional baseball players and explore whether this rule provides an advantage to certain players. The research uses player data from Major League Baseball (MLB) for the 2022 and 2023 regular seasons, and analyze both hitters and pitchers performance using multiple linear regression models. Additionally, pitchers are grouped based on their pitching tempo habits and categorized into relievers and starters. The findings are as follows: The pitch clock in 2023 improved the overall performance of hitters. On the other hand, there is a difference in performance between starters and relievers with similar pitching tempos. Relievers with a slower pitching tempo experienced a significant decline in ERA and strikeouts, aligning with the expectation that the pitch clock would negatively impact pitcher performance, while starters showed no significant change in performance. Relievers experienced a decline in control and defensive performance early in the season, but these effects diminished as the season progressed.This study provides a comprehensive analysis of the pitch clock in the MLB for 2023 and offers interpretations of changes in player performance, which can serve as a reference for professional teams.

    誌謝................................................i 摘要................................................ii Abstract...........................................iii 第一章 緒論..........................................1 第二章 文獻回顧.......................................4 第一節 投球計時規則效果與球員表現預期影響..................4 第二節 影響選手表現的因素................................5 第三節 時間壓力.........................................6 第三章 資料及研究方法....................................7 第一節 資料來源及處理....................................7 第二節 變數說明.........................................8 第三節 模型設定.........................................13 第四節 資料可能產生的問題.................................17 第四章 實證結果..........................................19 第一節 投球計時規則對球員表現的影響..........................19 第二節 投球計時規則對球員表現的影響:短期效果...................28 第五章 結論...............................................35 第一節 研究結論............................................35 第二節 研究限制............................................37 參考文獻..................................................38 附錄.....................................................40

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