[新聞]用球恢復係數降低 中職全壘打比去年少
用球恢復係數降低 中職全壘打比去年少
http://www.chinatimes.com/realtimenews/20170510006000-260403
(中時電子報)
去年中職全壘打產量創下新高,用球恢復係數受到球迷熱烈討論,
去年恢復係數兩度測試,是0.576與0.573,
今聯盟公布,目前用球測試係數經過測量為0.560,比去年低。
中職比賽用球恢復係數合格範圍在0.540到0.580間,
聯盟祕書長馮勝賢表示,經過三個禮拜使用同一批的球做檢測,
今年球的測試數量也比往年多一倍,均數更穩定,
另外也有美國的檢測單位,還在等待報告,也更客觀。
此次測試跟去年相同,由台北市立大學運動器材科技研究所進行,
測試項目包括外觀、縫線數、重量、圓周、直徑、縫線高度、
縫線寬度、恢復係數(COR)及壓縮值(C-D)等共九項。
去年同期中職共轟出165發全壘打,整季出現603轟,
平均一場出現2.51發全壘打,本季至今則轟出137轟,
平均每場有2.21轟,雖比去年減少,但相較於過去球季產量還是驚人,
中信兄弟團隊還比去年同期轟出更多轟,
馮勝賢說,球都在符合規定裡面,從旅外回來打擊型態開始改變,
掌握也很好,真的進步很多。
至於會不會固定進行用球檢測,馮勝賢回應,目前出現台灣的報告,
以及之後還有美國的檢測結果,未來球季如有差異性才會討論。
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