[請益] 投球姿勢請益～
這是小弟投球的姿勢...
來這裡請高手鞭策一下
感謝
直球：
http://www.wretch.cc/album/show.php?i=skywork23&b=2&f=1014419039&p=0
曲球：
http://www.wretch.cc/album/show.php?i=skywork23&b=2&f=1014419040&p=1
（不曉得為什麼這片上傳就會變成慢速影片...請將就點看>"<）
角度抓的不是很好
下次會在重拍 請高手們見諒
我知道我下盤的力量都沒用到
不知道要怎麼運用...大大們給小弟一點建議吧 >"<
順便請教 這樣的球速大概多少 因為我沒測過
感謝！
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