League Leaders Who Led?

MLB Single-Season Catcher Range Factor Record Progression

Every season that raised the bar, and the leader in every season between.

All-time career leaders →

The MLB single-season catcher range factor record is 10.46, set by Bill Krieg in 1884. It has stood for 142 years. The mark has been raised 7 times since 1871.

SS ASS POSS DPSS FPCTSS RFSS GSS E2B A2B PO2B DP2B FPCT2B RF2B G2B E3B A3B PO3B DP3B FPCT3B RF3B G3B EC POC AC DPC FPCTC RFC GC E1B PO1B A1B DP1B FPCT1B RF1B G1B EOF POOF AOF FPCTOF RFOF GOF EP AP POP FPCTP RFP GP E

Record Holders

8 marks since 1871
Year Player C RF Stood for
1884 Bill Krieg Bill Krieg 10.46 still standing
1883 Bill Holbert Bill Holbert 9.78 1 year
1882 Charlie Bennett 7.94 1 year
1880 Silver Flint Silver Flint 7.84 2 years
1877 Lew Brown 7.76 3 years
1873 Nat Hicks 6.89 4 years
1872 Nat Hicks 6.09 1 year
1871 Fergy Malone 5.70 1 year

The earliest marks here are records only in the sense that nobody had done better yet. Season length, schedule and the rules themselves have all changed, so a figure from the 1870s is not comparable with a modern one and is not offered as though it were.

Every Season

156 seasons
Year Leader C RF
2025 Yainer Diaz 9.75
2024 J. T. Realmuto 9.42
2023 Christian Vazquez 9.83
2022 Travis d'Arnaud 9.89
2021 Will Smith 9.78
2020 Tucker Barnhart 9.89
2019 Robinson Chirinos 10.08
2018 Austin Hedges 9.42
2017 Brian McCann 10.03
2016 Yasmani Grandal 9.37
2015 Yan Gomes 8.84
2014 Yan Gomes 8.93
2013 Carlos Santana 8.66
2012 Carlos Ruiz 8.76
2011 Brian McCann 8.38
2010 Ronny Paulino 8.13
2009 Bengie Molina 8.29
2008 Geovany Soto 7.84
2007 Russell Martin 7.93
2006 Joe Mauer 7.58
2005 Michael Barrett 7.55
2004 Michael Barrett 8.32
2003 Paul Lo Duca 9.06
2002 Brad Ausmus 7.81
2001 Damian Miller 8.65
2000 Damian Miller 7.51
1999 Damian Miller 7.94
1998 Javy Lopez 8.17
1997 Mike Piazza 8.05
1996 Javy Lopez 7.95
1995 Dan Wilson 7.96
1994 Javy Lopez 7.92
1993 Darren Daulton 7.18
1992 Ivan Rodriguez 7.31
1991 Craig Biggio 6.86
1990 Mike Scioscia 6.82
1989 Nelson Santovenia 7.05
1988 Gary Carter 7.15
1987 Alan Ashby 7.49
1986 Gary Carter 7.63
1985 Gary Carter 7.15
1984 Mike Fitzgerald 7.12
1983 Bo Diaz 7.46
1982 Gary Carter 6.92
1981 Alan Ashby 6.07
1980 Tim Blackwell 6.46
1979 Gary Carter 6.08
1978 Johnny Bench 6.10
1977 John Stearns 6.44
1976 Jerry Grote 7.01
1975 Jerry Grote 6.86
1974 Steve Yeager 6.56
1973 Jerry Grote 7.15
1972 Duffy Dyer 8.25
1971 Jerry Grote 7.65
1970 Ray Fosse 7.70
1969 Johnny Edwards 8.04
1968 Joe Azcue 7.72
1967 Joe Azcue 8.06
1966 Bill Freehan 7.23
1965 Johnny Edwards 7.47
1964 Johnny Edwards 8.03
1963 Johnny Edwards 7.40
1962 John Roseboro 7.02
1961 John Roseboro 7.46
1960 John Roseboro 7.91
1959 John Roseboro 7.71
1958 Yogi Berra 6.25
1957 Roy Campanella 6.69
1956 Stan Lopata 5.85
1955 Roy Campanella 6.00
1954 Roy Campanella 5.93
1953 Roy Campanella 6.17
1952 Roy Campanella 5.88
1951 Roy Campanella 5.67
1950 Roy Campanella 5.99
1949 Roy Campanella 5.82
1948 Earl Taborn 7.48
1947 Earl Taborn 6.68
1946 Leon Ruffin 6.55
1945 Bill Cash 7.20
1944 Bill Cash 6.36
1943 Chesley Gray 7.57
1942 Joe Greene 6.88
1941 Biz Mackey 6.86
1940 Joe Greene 6.56
1939 Joe Greene 7.10
1938 Frank Duncan 7.27
1937 Ted Radcliffe 7.93
1936 Frank Duncan 7.48
1935 Frank Duncan 7.51
1934 Josh Gibson 7.04
1933 Bill Perkins 7.80
1932 Tom Young 6.69
1931 Clarence Palm 6.41
1930 Tom Young 6.71
1929 Larry Brown 6.12
1928 Frank Duncan 5.89
1927 Bob Clarke 5.81
1926 Pythias Russ 6.92
1925 Gabby Hartnett 4.76
1924 Larry Brown 7.43
1923 Frank Duncan 6.72
1922 Frank Duncan 7.06
1921 George Dixon 6.91
1920 Bruce Petway 6.47
1919 Bill Killefer 6.02
1918 Eddie Ainsmith 6.11
1917 Bill Killefer 6.28
1916 Ray Schalk 6.61
1915 Bill Rariden 6.67
1914 Mike Simon 7.24
1913 Fred Carisch 6.39
1912 Ed Sweeney 6.62
1911 Jack Meyers 6.54
1910 Jack Meyers 6.77
1909 Ira Thomas 7.04
1908 Johnny Kling 6.37
1907 Ossee Schrecongost 7.93
1906 Ossee Schrecongost 7.21
1905 Ossee Schrecongost 7.94
1904 Ossee Schrecongost 7.92
1903 Ossee Schrecongost 8.05
1902 Ossee Schrecongost 6.69
1901 Malachi Kittridge 6.35
1900 Heinie Peitz 5.44
1899 Jack Warner 5.31
1898 Jack Warner 6.19
1897 Jack Warner 5.86
1896 Joe Sugden 5.06
1895 Charlie Ganzel 5.43
1894 Duke Farrell 5.76
1893 Duke Farrell 5.48
1892 Jack Boyle 6.89
1891 Dick Buckley 7.15
1890 John Munyan 6.83
1890 Deacon McGuire 6.83
1889 Buck Ewing 6.94
1888 Buck Ewing 7.99
1887 Tom Daly 7.84
1886 Fred Carroll 7.46
1885 John Milligan 8.25
1884 Bill Krieg 10.46 new record
1883 Bill Holbert 9.78 new record
1882 Charlie Bennett 7.94 new record
1881 Charlie Bennett 7.19
1880 Silver Flint 7.84 new record
1879 Lew Brown 7.27
1878 Pop Snyder 7.52
1877 Lew Brown 7.76 new record
1876 John Clapp 6.38
1875 Doug Allison 6.70
1874 Dick Higham 6.10
1873 Nat Hicks 6.89 new record
1872 Nat Hicks 6.09 new record
1871 Fergy Malone 5.70 new record