Progressive Leaders & Records for Range Factor/9Inn as RF (s.1950)

Table
Year Single-Season RF/9   Yearly RF/9
1950 Cliff Mapes 2.31 Cliff Mapes 2.31
1951 Cliff Mapes 2.31 Sam Mele 2.28
1952 Johnny Wyrostek 2.54 Johnny Wyrostek 2.55
1953 Johnny Wyrostek 2.54 Jim Piersall 2.48
1954 Johnny Wyrostek 2.54 Al Kaline+ 2.26
1955 Johnny Wyrostek 2.54 Jim Rivera 2.32
1956 Johnny Wyrostek 2.54 Al Kaline+ 2.30
1957 Roberto Clemente+ 2.65 Roberto Clemente+ 2.65
1958 Roberto Clemente+ 2.65 Roberto Clemente+ 2.60
1959 Roberto Clemente+ 2.65 Roberto Clemente+ 2.35
1960 Roberto Clemente+ 2.65 Gus Bell 2.29
1961 Roberto Clemente+ 2.65 Al Kaline+ 2.48
1962 Roberto Clemente+ 2.65 Johnny Callison 2.40
1963 Roberto Clemente+ 2.65 Bob Allison 2.31
1964 Roberto Clemente+ 2.65 Jim King 2.37
1965 Roberto Clemente+ 2.65 Mike Shannon 2.51
1966 Roberto Clemente+ 2.65 Jim Northrup 2.36
1967 Roberto Clemente+ 2.65 Tommy Harper 2.37
1968 Roberto Clemente+ 2.65 Hank Aaron+ 2.38
1969 Roberto Clemente+ 2.65 Johnny Callison 2.27
1970 Roberto Clemente+ 2.65 Tony Oliva 2.40
1971 Roberto Clemente+ 2.65 Jose Cardenal 2.43
1972 Roberto Clemente+ 2.65 Ollie Brown 2.49
1973 Roberto Clemente+ 2.65 Merv Rettenmund 2.51
1974 Dwight Evans 2.70 Dwight Evans 2.70
1975 Dwight Evans 2.86 Dwight Evans 2.86
1976 Dwight Evans 2.86 Jay Johnstone 2.53
1977 Dwight Evans 2.86 Dave Parker 2.58
1978 Dwight Evans 2.86 Leon Roberts 2.51
1979 Dwight Evans 2.86 Bake McBride 2.67
1980 Dwight Evans 2.86 Joel Youngblood 2.61
1981 Dwight Evans 2.86 Gary Roenicke 2.67
1982 Dwight Evans 2.86 Tom Brunansky 2.81
1983 Dwight Evans 2.86 Tom Brunansky 2.60
1984 George Vukovich 2.93 George Vukovich 2.93
1985 George Vukovich 2.93 Mike Davis 2.55
1986 George Vukovich 2.93 Andy Van Slyke 2.51
1987 George Vukovich 2.93 Glenn Braggs 2.66
1988 George Vukovich 2.93 Mark Davidson 2.82
1989 George Vukovich 2.93 Joe Orsulak 2.72
1990 George Vukovich 2.93 Glenn Wilson 2.70
1991 George Vukovich 2.93 Sammy Sosa 2.58
1992 George Vukovich 2.93 David Justice 2.41
1993 George Vukovich 2.93 Orlando Merced 2.61
1994 George Vukovich 2.93 Mark Whiten 2.79
1995 George Vukovich 2.93 Matt Mieske 2.49
1996 George Vukovich 2.93 Jose Herrera 2.55
1997 George Vukovich 2.93 Andruw Jones 2.52
1998 George Vukovich 2.93 Matt Lawton 2.87
1999 George Vukovich 2.93 Michael Tucker 2.61
2000 George Vukovich 2.93 Dave Martinez 2.48
2001 George Vukovich 2.93 Brian Jordan 2.41
2002 George Vukovich 2.93 Dustan Mohr 2.47
2003 George Vukovich 2.93 Brady Clark 2.52
2004 George Vukovich 2.93 Brady Clark 2.56
2005 George Vukovich 2.93 Ichiro Suzuki 2.53
2006 George Vukovich 2.93 Randy Winn 2.62
2007 George Vukovich 2.93 Corey Hart 2.67
2008 George Vukovich 2.93 Franklin Gutierrez 2.69
2009 George Vukovich 2.93 Nelson Cruz 2.65
2010 George Vukovich 2.93 Jay Bruce 2.63
2011 George Vukovich 2.93 Kosuke Fukudome 2.30
2012 George Vukovich 2.93 Jason Heyward 2.30
2013 George Vukovich 2.93 Shane Victorino 2.69
2014 George Vukovich 2.93 Jason Heyward 2.56
2015 George Vukovich 2.93 Kole Calhoun 2.30
2016 George Vukovich 2.93 Adam Eaton 2.86
2017 George Vukovich 2.93 David Peralta 2.40
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