[討論] 投球討鞭
請教各位大哥
投球動作有哪些需要修正
想讓投球能更穩定
這是在平地練投的慢動作
影片可能放大看比較清楚
謝謝!
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※ 文章網址: https://www.ptt.cc/bbs/PlayBaseball/M.1422538868.A.79B.html
※ 編輯: a614514 (111.240.253.135), 01/29/2015 21:42:32
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