用球係數怎麼看?只要超過0.560就是超標 - 棒球

By Leila
at 2022-04-06T18:25
at 2022-04-06T18:25
Table of Contents
中職》用球係數怎麼看? 只要超過0.560就是超標
〔記者羅志朋/台北報導〕中職歷經2010年「變形球」,2016、2020年「彈力球」,比賽
用球多次出現問題,為了弭平爭議,2020年12月8日領隊會議決議,未來比賽用球恢復係
數中間值訂在0.550,合格範圍為0.540至0.560。
過去中職比賽用球恢復係數中間值為0.560,合格範圍在0.540至0.580,由於範圍實在太
廣,用球係數多次超過0.570,造成全壘打滿天飛,聯盟和球團有感茲事體大,前年底決
定降低中間值至0.550,合格範圍也下修為0.540至0.560,去年場均全壘打僅1.1轟,和
2016年的場均2.51轟相比,差距非常大。
除了係數調降,為了與國際接軌,中職比賽用球用球縫線高度從0.05英寸(1英寸=2.54公
分)調高為0.07英寸,等於高了0.02英寸,換算下來縫線高度多了0.05公分,縫線變高,
也讓擊球飛行距離縮短,這也是去年全壘打減產因素之一。
比賽用球彈性好壞,決定打擊數據和全壘打產量高低,這已是近年反覆驗證過的事實,今
年韓職比賽用球恢復係數降至近年新低,加上好球帶放寬,開季15場比賽只出現14轟,場
均0.9轟,遠低於中職開季的場均2.5轟。
https://sports.ltn.com.tw/news/breakingnews/3884113
--
〔記者羅志朋/台北報導〕中職歷經2010年「變形球」,2016、2020年「彈力球」,比賽
用球多次出現問題,為了弭平爭議,2020年12月8日領隊會議決議,未來比賽用球恢復係
數中間值訂在0.550,合格範圍為0.540至0.560。
過去中職比賽用球恢復係數中間值為0.560,合格範圍在0.540至0.580,由於範圍實在太
廣,用球係數多次超過0.570,造成全壘打滿天飛,聯盟和球團有感茲事體大,前年底決
定降低中間值至0.550,合格範圍也下修為0.540至0.560,去年場均全壘打僅1.1轟,和
2016年的場均2.51轟相比,差距非常大。
除了係數調降,為了與國際接軌,中職比賽用球用球縫線高度從0.05英寸(1英寸=2.54公
分)調高為0.07英寸,等於高了0.02英寸,換算下來縫線高度多了0.05公分,縫線變高,
也讓擊球飛行距離縮短,這也是去年全壘打減產因素之一。
比賽用球彈性好壞,決定打擊數據和全壘打產量高低,這已是近年反覆驗證過的事實,今
年韓職比賽用球恢復係數降至近年新低,加上好球帶放寬,開季15場比賽只出現14轟,場
均0.9轟,遠低於中職開季的場均2.5轟。
https://sports.ltn.com.tw/news/breakingnews/3884113
--
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