http://www.baseballprospectus.com/article.php?articleid=16888
球速和月份的關係:
Month Speed correction value Avg. temperature
April -0.28 68°
May -0.10 72°
June +0.07 81°
July +0.13 84°
August +0.14 82°
September +0.07 75°
四月天氣冷 投手果然球速比較慢 要到八九月天氣熱時球速才變比較快
早午晚場比賽:
Time of day Pitch speed (relative to evening)
Mid-day -0.12
Afternoon -0.03
Night +0.07
Wee hours +0.05
看來投手不喜歡在陽光下投球
用球數:
Pit Speed (relative to first 20 pitches thrown)
21-40 -0.13
41-60 -0.19
61-80 -0.38
81-100 -0.46
101 + -0.32
除非是V壯這樣配速投球 不然大家都是愈投愈累然後球速下滑
快樂槍:
Ballpark Speed difference (relative to neutral park)
Kaufmann Stadium (KC) +0.83
U.S. Cellular Field (CWS) +0.55
Fenway Park (BOS) +0.48
Nationals Park (WAS) +0.42
Progressive Field (CLE) +0.31
Wrigley Field (CHC) -0.30
Yankee Stadium (NYY) -0.33
Citi Field (NYM) -0.34
Oakland Coliseum (OAK) -0.40
The Ballpark in Arlington (TEX) -0.55
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