[討論] 從Gameday數據看郭泓志
2008
極速 初速 末速 速差 pfx_x pfx_z 揮空率 好球率 樣本數
四縫 94.9 92.0 83.6 8.4 4.6 11.2 23.3% 67.7% 62
二縫 93.1 91.7 83.6 8.1 6.0 5.9 0.0% 60.0% 10
滑球 84.4 82.9 76.2 6.7 -3.8 0.9 41.7% 63.2% 19
變速 83.3 83.3 76.8 6.5 4.8 6.3 0.0% 0.0% 2
曲球 78.8 76.0 69.7 6.3 -9.9 -5.3 0.0% 42.1% 19
2007
極速 初速 末速 速差 pfx_x pfx_z 揮空率 好球率 樣本數
四縫 95.0 90.2 82.1 8.1 6.0 12.6 26.5% 60.6% 226
滑球 87.0 81.4 75.1 6.3 -1.6 2.9 19.5% 63.3% 90
變速 86.4 81.4 73.6 7.8 8.5 11.1 14.3% 38.9% 18
曲球 74.0 72.5 66.7 5.8 -7.6 -5.3 0.0% 50.0% 8
郭泓志在2007的226顆速球裡,只有一顆的pfx_z為6.5,其他全部在8.7以上;但
在2008兩場出賽裡就出現10顆pfx_z在5-7上下的速球,故暫且推測為二縫線,至
於變化球的差異也頗大,還不確定是Gameday的誤差還是軌跡有所不同……因為
是看Gameday的speed跟pfx來粗略推測球種,若有差錯還請包涵。
※揮空率=揮空/(揮空+界內+界外)
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