想了解投手的K功，大家常看K/9值，就是平均每九局可以投出幾K，
但如果投手解決打者能力不夠強(常被打出安打 或投出保送)，也有
機會達到較高的K/9值(但投球內容相對並不是那麼好)
用另外一個數據來看投手K功，就是K%(公式為K/PA)，意味著以三振
出局的打席數 佔所有打席數的比例，是一種比較絕對化的K功數據。
Pedro Martinez於1999年創下K%最佳數據 (另外在這K% TOP100名單中，
K/BB最高為Schilling 2002年所創，Pedro在2000年為K/BB第二高)
本季的Sale,Scherzer兩人目前K%都達35%+ 表現非常亮眼，為現役
兩位最強三振大師(站穩 美聯&國聯 NO.1)。
自1916這一百年來，MLB先發投手符合最低投球局數(IP >= 球隊出賽場數)
單季K% TOP100名單如下: (2017年 為美國6/14的資料)
BB% K% Season K% TOP100
4.4% 37.5% 1999 Pedro Martinez 最佳K%
7.1% 37.4% 2001 Randy Johnson
4.8% 35.3% 2017 Chris Sale
6.0% 35.1% 2017 Max Scherzer
3.9% 34.8% 2000 Pedro Martinez (K/BB第二高，K% TOP100名單中)
7.6% 34.7% 2000 Randy Johnson
7.5% 34.3% 2016 Jose Fernandez
9.1% 34.2% 1997 Randy Johnson
7.5% 34.0% 1995 Randy Johnson
4.7% 33.8% 2015 Clayton Kershaw
6.5% 33.7% 1999 Randy Johnson
12.2% 33.3% 1998 Kerry Wood
9.5% 32.9% 2013 Yu Darvish
8.5% 32.5% 1998 Randy Johnson
10.6% 32.4% 2017 Robbie Ray
6.9% 32.3% 2002 Randy Johnson
7.1% 32.2% 1997 Pedro Martinez
4.9% 32.1% 2015 Chris Sale
4.1% 31.9% 2014 Clayton Kershaw
5.8% 31.6% 1997 Curt Schilling
6.2% 31.5% 2016 Max Scherzer
8.3% 31.4% 1984 Dwight Gooden
3.2% 31.1% 2002 Curt Schilling K/BB最高(K% TOP100名單中)
10.0% 30.9% 1987 Nolan Ryan
3.8% 30.7% 2015 Max Scherzer
9.9% 30.5% 1989 Nolan Ryan
5.1% 30.4% 2002 Pedro Martinez
5.7% 30.4% 2014 Chris Sale
10.0% 30.3% 1995 Hideo Nomo
7.8% 30.2% 2007 Erik Bedard
4.6% 30.1% 2004 Randy Johnson
6.1% 30.1% 2004 Johan Santana
11.3% 30.0% 2003 Kerry Wood
7.9% 30.0% 2017 Chris Archer
10.5% 29.7% 1991 Nolan Ryan
10.1% 29.7% 2004 Oliver Perez
5.9% 29.6% 2015 Carlos Carrasco
5.5% 29.5% 1965 Sandy Koufax
9.5% 29.5% 1993 Randy Johnson
10.4% 29.4% 1994 Randy Johnson
7.6% 29.4% 2012 Max Scherzer
12.4% 29.3% 2001 Kerry Wood
5.8% 29.3% 2016 Noah Syndergaard
11.8% 29.1% 1965 Sam McDowell
5.3% 29.1% 2017 Zack Greinke
7.7% 29.0% 1962 Sandy Koufax
7.6% 29.0% 2015 Chris Archer
4.8% 28.8% 2003 Curt Schilling
7.5% 28.8% 2009 Tim Lincecum
9.8% 28.8% 2017 Jacob deGrom
6.8% 28.7% 1986 Mike Scott
3.8% 28.7% 2001 Curt Schilling
6.7% 28.7% 2013 Max Scherzer
3.4% 28.7% 2017 Jeff Samardzija
9.1% 28.6% 2008 Tim Lincecum
7.4% 28.6% 2017 Lance McCullers
13.6% 28.5% 1972 Nolan Ryan
6.6% 28.5% 2017 Stephen Strasburg
9.1% 28.4% 1990 Nolan Ryan
5.8% 28.4% 2003 Mark Prior
12.0% 28.3% 1973 Nolan Ryan
5.4% 28.3% 2014 Corey Kluber
9.2% 28.2% 1998 Roger Clemens
3.4% 28.2% 2004 Ben Sheets
6.3% 28.1% 2011 Zack Greinke
6.3% 28.1% 2016 Justin Verlander
9.2% 28.1% 2016 Robbie Ray
8.5% 28.1% 2017 Carlos Martinez
4.3% 28.1% 2017 Clayton Kershaw
6.5% 28.0% 1997 Roger Clemens
6.0% 28.0% 2017 Luis Severino
12.7% 27.9% 1966 Sam McDowell
7.0% 27.9% 2014 Max Scherzer
5.0% 27.9% 2014 Stephen Strasburg
5.5% 27.7% 1996 John Smoltz
8.5% 27.7% 2004 Jason Schmidt
4.5% 27.7% 2013 Matt Harvey
5.1% 27.7% 2015 Corey Kluber
10.7% 27.6% 1997 David Cone
5.6% 27.6% 1998 Curt Schilling
6.3% 27.5% 2003 Pedro Martinez
8.5% 27.5% 2013 Jose Fernandez
5.9% 27.5% 2016 Madison Bumgarner
15.3% 27.4% 1976 Nolan Ryan
5.8% 27.4% 1988 Roger Clemens
6.4% 27.4% 2009 Justin Verlander
7.0% 27.4% 2016 Michael Pineda
7.9% 27.4% 2016 Chris Archer
9.5% 27.4% 2017 Trevor Bauer
5.1% 27.3% 2015 Jacob deGrom
5.0% 27.2% 2009 Javier Vazquez
5.9% 27.2% 2011 Clayton Kershaw
5.0% 27.2% 2014 Felix Hernandez
7.6% 27.1% 1990 David Cone
10.9% 27.1% 2012 Yu Darvish
7.2% 27.1% 2013 Anibal Sanchez
5.5% 27.1% 2015 Jake Arrieta
10.0% 26.9% 2007 Scott Kazmir
3.8% 26.9% 2014 David Price
4.5% 26.9% 2015 Madison Bumgarner