League Leaders Who Led?

MLB Single-Season Second Base 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 second base range factor record is 7.62, set by Jack Burdock in 1878. It has stood for 148 years. The mark has been raised 4 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

5 marks since 1871
Year Player 2B RF Stood for
1878 Jack Burdock Jack Burdock 7.62 still standing
1877 Joe Gerhardt Joe Gerhardt 7.21 1 year
1876 Ed Somerville Ed Somerville 7.20 1 year
1873 Ross Barnes Ross Barnes 7.13 3 years
1871 Jimmy Wood Jimmy Wood 6.71 2 years

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

155 seasons
Year Leader 2B RF
2025 Luis Garcia 4.19
2024 Ketel Marte 4.47
2023 Andres Gimenez 4.40
2022 Brendan Rodgers 4.69
2021 Whit Merrifield 4.46
2020 Jose Altuve 3.96
2019 Kolten Wong 4.50
2018 Scooter Gennett 4.61
2017 Jonathan Schoop 4.87
2016 Josh Harrison 4.91
2015 DJ LeMahieu 5.05
2014 Chase Utley 4.86
2013 Brian Dozier 4.99
2012 Aaron Hill 4.91
2011 Mark Ellis 5.15
2010 Orlando Hudson 5.11
2009 Aaron Hill 5.07
2008 Ian Kinsler 5.64
2007 Ian Kinsler 5.53
2006 Ian Kinsler 5.38
2005 Craig Counsell 5.34
2004 Orlando Hudson 5.45
2003 Marcus Giles 5.39
2002 Pokey Reese 5.52
2001 Damion Easley 5.07
2000 Randy Velarde 5.26
1999 Miguel Cairo 5.37
1998 Fernando Vina 5.52
1997 Craig Biggio 5.28
1996 Eric Young 5.55
1995 Mike Lansing 5.35
1994 Carlos Garcia 5.51
1993 Carlos Baerga 5.28
1992 Robby Thompson 5.65
1991 Jose Lind 5.28
1990 Harold Reynolds 5.18
1989 Jose Oquendo 5.42
1988 Ron Gant 5.52
1987 Marty Barrett 5.53
1986 Ron Oester 5.58
1985 Glenn Hubbard 6.27
1984 Frank White 5.61
1983 Bobby Grich 5.81
1982 Tony Bernazard 5.81
1981 Bump Wills 5.88
1980 Manny Trillo 5.91
1979 Paul Molitor 5.75
1978 Manny Trillo 5.77
1977 Tito Fuentes 5.55
1976 Rennie Stennett 5.94
1975 Bobby Grich 6.05
1974 Rennie Stennett 5.95
1973 Bobby Grich 5.80
1972 Tommy Helms 5.71
1971 Tommy Helms 5.79
1970 Joe Morgan 5.49
1969 Bobby Knoop 5.50
1968 Horace Clarke 5.76
1967 Bill Mazeroski 5.61
1966 Bill Mazeroski 5.86
1965 Bill Mazeroski 5.74
1964 Bill Mazeroski 5.49
1963 Bill Mazeroski 6.13
1962 Bill Mazeroski 5.87
1961 Bill Mazeroski 6.02
1960 Nellie Fox 5.77
1959 Tony Taylor 5.42
1958 Pete Runnels 5.54
1957 Nellie Fox 5.85
1956 Nellie Fox 5.68
1955 Danny O'Connell 5.84
1954 Red Schoendienst 6.05
1953 Nellie Fox 5.70
1952 Billy Goodman 6.06
1951 Nellie Fox 5.86
1950 Jerry Priddy 6.26
1949 Bobby Doerr 6.00
1948 Jerry Priddy 6.01
1947 Emil Verban 5.83
1946 Bobby Doerr 5.98
1945 Irv Hall 6.09
1944 Snuffy Stirnweiss 5.94
1943 Lonny Frey 5.97
1942 Bobby Doerr 5.84
1941 Jimmy Bloodworth 6.18
1940 Billy Herman 6.03
1939 Bobby Doerr 6.09
1938 Pep Young 6.20
1937 Billy Herman 6.22
1936 Burgess Whitehead 6.50
1935 Buddy Myer 6.18
1934 Odell Hale 6.48
1933 Hughie Critz 6.44
1932 Bill Cissell 6.23
1931 Oscar Melillo 6.43
1930 Oscar Melillo 6.46
1929 John Kerr 6.28
1928 Freddie Maguire 6.77
1927 Frankie Frisch 6.78
1926 Bingo DeMoss 6.38
1925 Sparky Adams 6.29
1924 Frankie Frisch 6.49
1923 Bingo DeMoss 6.21
1922 Frank Parkinson 6.37
1921 Jimmy Dykes 6.17
1920 Jimmy Dykes 6.32
1919 Morrie Rath 5.78
1918 Joe Gedeon 5.84
1917 Del Pratt 5.69
1916 Del Pratt 5.88
1915 George Cutshaw 5.65
1914 George Cutshaw 5.88
1913 George Cutshaw 5.78
1912 Bill Sweeney 6.11
1911 Bill Sweeney 5.75
1910 Dave Shean 6.09
1909 Dick Egan 5.58
1908 Nap Lajoie 6.33
1907 Hobe Ferris 6.18
1906 Germany Schaefer 5.93
1905 Miller Huggins 5.85
1904 Johnny Evers 5.91
1903 Nap Lajoie 6.30
1902 Bobby Lowe 6.22
1901 Nap Lajoie 6.52
1900 Nap Lajoie 6.16
1899 Kid Gleason 5.96
1898 Bobby Lowe 5.89
1897 Cupid Childs 6.17
1896 Cupid Childs 6.53
1895 Bid McPhee 6.27
1894 Bid McPhee 6.59
1893 Sam Wise 6.78
1892 Bid McPhee 6.40
1891 Danny Richardson 6.60
1890 Joe Gerhardt 6.82
1889 Fred Pfeffer 6.98
1888 Bid McPhee 6.61
1887 Bid McPhee 6.79
1886 Bid McPhee 7.09
1885 Pop Smith 7.13
1884 Fred Pfeffer 7.30
1883 Joe Gerhardt 6.94
1882 Cub Stricker 6.81
1881 Fred Dunlap 6.48
1880 Jack Burdock 7.01
1879 Thorny Hawkes 7.56
1878 Jack Burdock 7.62 new record
1877 Joe Gerhardt 7.21 new record
1876 Ed Somerville 7.20 new record
1875 Ed Somerville 6.91
1874 Ross Barnes 6.41
1873 Ross Barnes 7.13 new record
1872 Ross Barnes 6.67
1871 Jimmy Wood 6.71 new record