Single-Season Leaders & Records for Range Factor/9Inn as RF (s.1954)

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Single-Season Leaders & Records for Range Factor/9Inn as RF (s.1954)

Baseball Leaders & Baseball Records: Single-Season Career Active Progressive Year-by-Year Top-Tens Yearly League

+ - Indicates Hall of Famer. Bold indicates active player.

Statistic Description: Range Factor per 9 Inn 9 * (Putouts + Assists) / Innings Played

Only players who finished in the top 40 for the majors in a season will appear on this list.
Leaders from the current season are only included for rate stats after July 1st.

For batting rate stats, generally a minimum of 3.1 Plate Appearances/G, 1.0 IP/G, 0.67 Gm and Chances/Team Game (fielding), 0.2 SB att/Team Game (catchers), and 0.1 SB att/Team Game (baserunners only since 1951), and 0.1 decision/G for single-season leaderboards generally needed for rate statistics. For pitcher fielding the minimums are reduced by a third. For LF, CF, RF fielding stats, we only have reliable data since 1954, so all leaders are since 1954. Explanation of min. requirements

This statistic is computed from play-by-play data which is only complete from 1974 to the present. From 1945-1973, the data is incomplete, though for most seasons only less than 20 games per season total are missing. Please see our page on data coverage for a full view of the data used to create these lists.

Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
1.	George Vukovich (28)	2.928	1984	R
2.	Matt Lawton (26)	2.874	1998	R
3.	Dwight Evans (23)	2.858	1975	R
4.	Mark Davidson (27)	2.820	1988	R
5.	Tom Brunansky (21)	2.811	1982	R
6.	Mark Whiten (27)	2.791	1994	R
7.	Joe Orsulak (27)	2.715	1989	L
8.	Dwight Evans (22)	2.704	1974	R
9.	Glenn Wilson (31)	2.699	1990	R
10.	Franklin Gutierrez (25)	2.687	2008	R
11.	Randy Bush (30)	2.684	1989	L
12.	Gary Roenicke (26)	2.672	1981	R
13.	Corey Hart (25)	2.666	2007	R
	Bake McBride (30)	2.666	1979	R
15.	Glenn Braggs (24)	2.661	1987	R
16.	Roberto Clemente+ (22)	2.657	1957	R
17.	Mike Davis (25)	2.655	1984	L
18.	Nelson Cruz (28)	2.650	2009	R
19.	Dan Ford (30)	2.628	1982	R
20.	Jay Bruce (23)	2.626	2010	L
21.	Mark Teahen (25)	2.620	2007	R
	Randy Winn (32)	2.620	2006	R
23.	Joel Youngblood (28)	2.613	1980	R
24.	Orlando Merced (26)	2.608	1993	R
	Michael Tucker (28)	2.608	1999	R
26.	Nelson Cruz (29)	2.601	2010	R
27.	Tom Brunansky (22)	2.598	1983	R
28.	Roberto Clemente+ (23)	2.597	1958	R
29.	Cory Snyder (26)	2.592	1989	R
30.	Jesse Barfield (28)	2.590	1988	R
31.	Austin Kearns (26)	2.586	2006	R
32.	Bobby Bonds (33)	2.582	1979	R
	Denard Span (24)	2.582	2008	L
34.	Dave Parker (26)	2.579	1977	R
35.	Sammy Sosa (22)	2.576	1991	R
36.	Rob Deer (29)	2.571	1990	R
37.	Mike Kingery (26)	2.569	1987	L
38.	Doug Frobel (25)	2.567	1984	R
39.	Rob Deer (32)	2.559	1993	R
40.	Brady Clark (31)	2.558	2004	R
41.	Jose Herrera (23)	2.553	1996	L
	Tim Salmon (24)	2.553	1993	R
43.	Ryan Sweeney (24)	2.550	2009	L
	Randy Winn (34)	2.550	2008	R
45.	Mike Davis (26)	2.546	1985	L
46.	Johnny Wyrostek (32)	2.545	1952	R
47.	Mark Whiten (24)	2.542	1991	R
48.	Larry Walker (24)	2.540	1991	R
49.	Tony Armas (28)	2.536	1982	R
50.	Ichiro Suzuki (31)	2.535	2005	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
51.	Reggie Jackson+ (28)	2.531	1974	L
	Jay Johnstone (30)	2.531	1976	R
53.	Matt Mieske (28)	2.528	1996	R
54.	Mark McLemore (28)	2.518	1993	R
55.	Brady Clark (30)	2.515	2003	R
	Andruw Jones (20)	2.515	1997	R
57.	Merv Rettenmund (30)	2.514	1973	R
	Mike Vail (25)	2.514	1977	R
59.	Mike Shannon (25)	2.513	1965	R
60.	Andy Van Slyke (25)	2.512	1986	R
61.	Jermaine Dye (25)	2.510	1999	R
62.	Leon Roberts (27)	2.507	1978	R
63.	Austin Kearns (27)	2.504	2007	R
64.	Jerry Martin (33)	2.503	1982	R
65.	Jim Eisenreich (34)	2.501	1993	L
66.	Warren Cromartie (29)	2.500	1983	L
67.	Jesse Barfield (31)	2.497	1991	R
68.	Matt Mieske (27)	2.494	1995	R
69.	Wayne Kirby (29)	2.493	1993	R
70.	Dave Winfield+ (25)	2.492	1977	R
71.	Ollie Brown (28)	2.490	1972	R
72.	Jim Piersall (23)	2.485	1953	R
73.	Al Kaline+ (26)	2.480	1961	R
	Dave Martinez (35)	2.480	2000	L
75.	Al Kaline+ (23)	2.479	1958	R
76.	Austin Kearns (25)	2.478	2005	R
77.	Junior Felix (21)	2.477	1989	R
78.	Rob Deer (30)	2.474	1991	R
79.	Tony Armas (27)	2.472	1981	R
80.	Steve Kemp (28)	2.471	1983	L
	Chet Lemon (35)	2.471	1990	R
82.	Dustan Mohr (26)	2.466	2002	R
	Richie Zisk (25)	2.466	1974	R
84.	Brian Jordan (29)	2.463	1996	R
	Xavier Nady (29)	2.463	2008	R
86.	Von Hayes (23)	2.461	1982	R
87.	Ichiro Suzuki (30)	2.459	2004	R
88.	Jeffrey Hammonds (23)	2.453	1994	R
89.	Jesse Barfield (29)	2.451	1989	R
90.	Bob Bailor (26)	2.449	1978	R
	Devon White (24)	2.449	1987	R
92.	Hank Aaron+ (27)	2.447	1961	R
93.	Junior Felix (26)	2.445	1994	R
94.	Cory Snyder (25)	2.444	1988	R
95.	Jesse Barfield (26)	2.443	1986	R
96.	Austin Kearns (22)	2.440	2002	R
	Earl Robinson (24)	2.440	1961	R
98.	Von Hayes (31)	2.438	1990	R
	Darrin Jackson (30)	2.438	1994	R
	Cesar Tovar (31)	2.438	1972	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
101.	Jim Eisenreich (35)	2.436	1994	L
102.	Jesse Barfield (25)	2.434	1985	R
	Reggie Jackson+ (30)	2.434	1976	L
	Glenn Wilson (26)	2.434	1985	R
105.	Dwight Evans (29)	2.429	1981	R
106.	Tony Armas (26)	2.428	1980	R
107.	Jose Cardenal (27)	2.427	1971	R
108.	Mike Anderson (24)	2.423	1975	R
	Nick Markakis (22)	2.423	2006	L
110.	Stan Javier (33)	2.421	1997	R
111.	Mike Davis (24)	2.419	1983	L
	Mark Kotsay (23)	2.419	1999	L
	Matt Lawton (30)	2.419	2002	R
114.	Sixto Lezcano (30)	2.417	1984	R
115.	Dan Ford (27)	2.415	1979	R
	Tim Salmon (30)	2.415	1999	R
117.	Dante Bichette (27)	2.413	1991	R
	Tim Salmon (28)	2.413	1997	R
119.	Mike Anderson (23)	2.412	1974	R
	Sammy Sosa (30)	2.412	1999	R
	Giancarlo Stanton (20)	2.412	2010	R
122.	Tony Gwynn+ (30)	2.411	1990	L
	David Justice (26)	2.411	1992	L
124.	Shin-Soo Choo (26)	2.406	2009	L
	Brian Jordan (34)	2.406	2001	R
	Jorge Orta (29)	2.406	1980	R
	Tim Salmon (31)	2.406	2000	R
128.	Johnny Callison (23)	2.405	1962	R
129.	Aubrey Huff (28)	2.402	2005	R
130.	Reggie Sanders (34)	2.401	2002	R
131.	Shawn Green (23)	2.397	1996	L
132.	Brian Jordan (33)	2.396	2000	R
	Tony Oliva (31)	2.396	1970	R
134.	Mark Kotsay (24)	2.395	2000	L
135.	Jose Cruz (29)	2.391	2003	R
136.	Dave May (30)	2.390	1974	R
137.	Tony Gwynn+ (24)	2.389	1984	L
	Lee Lacy (36)	2.389	1984	R
139.	Al Kaline+ (27)	2.388	1962	R
140.	Casey Blake (32)	2.387	2006	R
141.	Sixto Lezcano (23)	2.386	1977	R
	Mike Lum (25)	2.386	1971	L
	Trot Nixon (31)	2.386	2005	L
144.	Charlie Moore (29)	2.384	1982	R
145.	Wally Post (27)	2.380	1957	R
146.	Hank Aaron+ (34)	2.377	1968	R
	Sammy Sosa (25)	2.377	1994	R
	Tony Womack (29)	2.377	1999	R
149.	Kirby Puckett+ (34)	2.375	1994	R
150.	Bobby Abreu (26)	2.374	2000	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Tommy Harper (26)	2.374	1967	R
	Hosken Powell (26)	2.374	1981	L
	Cory Snyder (24)	2.374	1987	R
154.	Chris James (25)	2.372	1988	R
	Dion James (21)	2.372	1984	L
156.	Claudell Washington (24)	2.371	1979	L
157.	Tom Brunansky (29)	2.370	1990	R
158.	Jesse Barfield (27)	2.368	1987	R
	Jesse Barfield (30)	2.368	1990	R
160.	Dwight Evans (24)	2.367	1976	R
161.	Dave Winfield+ (27)	2.366	1979	R
162.	Bobby Bonds (29)	2.365	1975	R
	Jim King (31)	2.365	1964	R
	Clete Thomas (25)	2.365	2009	R
165.	Jack Clark (21)	2.364	1977	R
166.	Dave Winfield+ (24)	2.362	1976	R
167.	Mike Devereaux (32)	2.361	1995	R
168.	Jesse Barfield (23)	2.360	1983	R
	Dante Bichette (29)	2.360	1993	R
	Roberto Clemente+ (24)	2.360	1959	R
171.	Roberto Clemente+ (33)	2.359	1968	R
	Jim Northrup (26)	2.359	1966	R
173.	Pat Kelly (25)	2.358	1970	L
	Mark Whiten (25)	2.358	1992	R
175.	Reggie Jackson+ (29)	2.357	1975	L
176.	Dan Ford (31)	2.356	1983	R
	Reggie Sanders (25)	2.356	1993	R
	George Vukovich (29)	2.356	1985	R
179.	Tim Salmon (25)	2.354	1994	R
	Jayson Werth (30)	2.354	2009	R
181.	Magglio Ordonez (24)	2.353	1998	R
	Ichiro Suzuki (28)	2.353	2002	R
183.	Rob Deer (28)	2.351	1989	R
184.	Ichiro Suzuki (27)	2.350	2001	R
185.	J.D. Drew (24)	2.349	2000	R
	Oscar Gamble (26)	2.349	1976	R
187.	Bobby Bonds (27)	2.348	1973	R
	Jose Canseco (27)	2.348	1992	R
189.	Ruben Sierra (27)	2.346	1993	R
	Sammy Sosa (21)	2.346	1990	R
191.	Hunter Pence (25)	2.345	2008	R
192.	Jay Bruce (22)	2.344	2009	L
	Reggie Jackson+ (33)	2.344	1979	L
	Terry Puhl (23)	2.344	1980	R
195.	Roger Cedeno (24)	2.343	1999	R
	Rusty Staub (22)	2.343	1966	R
197.	Joe Lefebvre (25)	2.342	1981	R
	Paul O'Neill (31)	2.342	1994	L
199.	Vladimir Guerrero (29)	2.341	2004	R
	Tim Salmon (26)	2.341	1995	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Shane Victorino (26)	2.341	2007	R
202.	Al Cowens (24)	2.340	1976	R
203.	Joe Orsulak (30)	2.338	1992	L
	Sammy Sosa (26)	2.338	1995	R
	Glenn Wilson (27)	2.338	1986	R
206.	Rob Deer (25)	2.337	1986	R
	Danny Tartabull (33)	2.337	1996	R
208.	Mike Davis (27)	2.334	1986	L
	Aaron Guiel (30)	2.334	2003	R
210.	Ken Griffey (32)	2.333	1982	L
	Sixto Lezcano (24)	2.333	1978	R
212.	Roger Maris (33)	2.332	1968	R
213.	Roberto Clemente+ (36)	2.330	1971	R
	Jose Guillen (29)	2.330	2005	R
	Austin Kearns (28)	2.330	2008	R
	Larry Walker (23)	2.330	1990	R
217.	Darnell Coles (27)	2.329	1989	R
218.	Jack Clark (22)	2.328	1978	R
	Shawn Green (26)	2.328	1999	L
220.	Jeff Burroughs (22)	2.325	1973	R
	Ryan Church (29)	2.325	2008	L
	Jeff DaVanon (29)	2.325	2003	R
	Paul O'Neill (37)	2.325	2000	L
224.	Cliff Mapes (28)	2.324	1950	R
225.	George Vukovich (27)	2.323	1983	R
226.	Rob Deer (31)	2.321	1992	R
	Karim Garcia (22)	2.321	1998	L
	Jacque Jones (29)	2.321	2004	L
229.	Tony Gwynn+ (25)	2.320	1985	L
230.	Jeremy Hermida (23)	2.319	2007	R
231.	Ellis Burks (35)	2.316	2000	R
	Jim Rivera (33)	2.316	1955	L
233.	Dave Engle (24)	2.315	1981	R
234.	Bob Allison (28)	2.314	1963	R
	Garret Anderson (26)	2.314	1998	L
	Lyman Bostock (27)	2.314	1978	R
	Willard Marshall (32)	2.314	1953	R
238.	Ted Ford (25)	2.313	1972	R
239.	Robert Fick (28)	2.312	2002	R
	Dave Parker (24)	2.312	1975	R
241.	J.D. Drew (30)	2.310	2006	R
	Dwight Evans (26)	2.310	1978	R
243.	Matt Lawton (28)	2.309	2000	R
244.	Ellis Burks (28)	2.306	1993	R
	James Mouton (25)	2.306	1994	R
246.	Andre Dawson+ (29)	2.303	1984	R
247.	Alex Ochoa (30)	2.302	2002	R
248.	Jason Heyward (22)	2.301	2012	L
	Al Kaline+ (21)	2.301	1956	R
	Magglio Ordonez (25)	2.301	1999	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Ichiro Suzuki (36)	2.301	2010	R
252.	Kosuke Fukudome (34)	2.299	2011	R
253.	Geoff Jenkins (30)	2.298	2005	R
	Orlando Merced (29)	2.298	1996	R
	Ichiro Suzuki (29)	2.298	2003	R
256.	Al Cowens (26)	2.296	1978	R
257.	Tony Gwynn+ (26)	2.295	1986	L
258.	Dwight Evans (31)	2.294	1983	R
	Dave Parker (25)	2.294	1976	R
260.	Nelson Cruz (30)	2.293	2011	R
	Willie Kirkland (27)	2.293	1961	R
262.	Hunter Pence (27)	2.292	2010	R
263.	Bill Buckner (21)	2.291	1971	L
	Ken Griffey (37)	2.291	2007	L
265.	Gus Bell (31)	2.290	1960	R
	Sixto Lezcano (28)	2.290	1982	R
267.	Ivan Calderon (27)	2.288	1989	R
	Hosken Powell (23)	2.288	1978	L
	Giancarlo Stanton (22)	2.288	2012	R
270.	Jay Buhner (26)	2.287	1991	R
	Carlos Lopez (29)	2.287	1978	R
272.	Pat Sheridan (26)	2.284	1984	R
273.	Jeff Francoeur (27)	2.283	2011	R
274.	Melvin Nieves (25)	2.282	1997	R
275.	Jermaine Dye (33)	2.281	2007	R
	Sammy Sosa (24)	2.281	1993	R
277.	Jose Canseco (25)	2.280	1990	R
	Felix Jose (27)	2.280	1992	R
	Sam Mele (29)	2.280	1951	R
280.	Jayson Werth (32)	2.279	2011	R
281.	Nelson Cruz (26)	2.278	2007	R
	Dale Murphy (34)	2.278	1990	R
	Bubba Trammell (29)	2.278	2001	R
	Glenn Wilson (28)	2.278	1987	R
285.	Richard Hidalgo (30)	2.277	2005	R
286.	Randy Bush (29)	2.276	1988	L
	Bobby Higginson (32)	2.276	2003	R
	Dale Murphy (32)	2.276	1988	R
289.	Matt Mieske (26)	2.275	1994	R
290.	Dwight Evans (27)	2.274	1979	R
	Tony Gwynn+ (31)	2.274	1991	L
292.	Dusty Baker (26)	2.273	1975	R
	George Hendrick (36)	2.273	1986	R
	Hosken Powell (25)	2.273	1980	L
	Justin Upton (21)	2.273	2009	R
296.	Harold Baines (27)	2.271	1986	L
297.	Johnny Callison (30)	2.268	1969	R
298.	Darryl Strawberry (27)	2.267	1989	L
299.	Vladimir Guerrero (24)	2.266	1999	R
300.	Brian Jordan (28)	2.265	1995	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Nick Markakis (24)	2.265	2008	L
	Justin Upton (23)	2.265	2011	R
303.	Roger Cedeno (28)	2.264	2003	R
	Dwight Evans (30)	2.264	1982	R
305.	Wally Post (26)	2.263	1956	R
306.	Shawn Green (22)	2.262	1995	L
	Ben Revere (24)	2.262	2012	R
308.	Bake McBride (29)	2.261	1978	R
	Jon Nunnally (23)	2.261	1995	R
310.	Roberto Clemente+ (37)	2.260	1972	R
	Sixto Lezcano (26)	2.260	1980	R
	Joel Youngblood (27)	2.260	1979	R
313.	Clint Hurdle (22)	2.259	1980	R
	Dave Philley (30)	2.259	1950	R
	Reggie Sanders (29)	2.259	1997	R
	Ellis Valentine (23)	2.259	1978	R
317.	Ivan Calderon (25)	2.258	1987	R
	Mark Kotsay (22)	2.258	1998	L
	Fred Lynn (32)	2.258	1984	L
	Ben Zobrist (29)	2.258	2010	R
321.	Dan Pasqua (30)	2.257	1992	L
322.	Roberto Clemente+ (20)	2.256	1955	R
	Al Kaline+ (19)	2.256	1954	R
	Bake McBride (31)	2.256	1980	R
	Dave Parker (28)	2.256	1979	R
	Vada Pinson (35)	2.256	1974	L
327.	Michael Tucker (33)	2.255	2004	R
328.	Ryan Ludwick (29)	2.254	2008	L
	Jim Northrup (28)	2.254	1968	R
	Paul O'Neill (29)	2.254	1992	L
	Tony Oliva (27)	2.254	1966	R
	Reggie Smith (29)	2.254	1974	R
333.	Dante Bichette (36)	2.252	2000	R
	Paul O'Neill (28)	2.252	1991	L
335.	Reggie Sanders (26)	2.250	1994	R
336.	Gabe Gross (28)	2.249	2008	R
	Jacque Jones (30)	2.249	2005	L
	Mark Teahen (26)	2.249	2008	R
339.	Alex Rios (31)	2.248	2012	R
	Leon Roberts (24)	2.248	1975	R
	Dave Winfield+ (23)	2.248	1975	R
342.	Luke Scott (29)	2.247	2007	R
343.	Nick Swisher (29)	2.246	2010	L
344.	Ichiro Suzuki (35)	2.245	2009	R
345.	Von Hayes (33)	2.244	1992	R
346.	Bob Bailor (27)	2.243	1979	R
347.	George Hendrick (30)	2.242	1980	R
	Richard Hidalgo (28)	2.242	2003	R
349.	Jermaine Dye (32)	2.241	2006	R
350.	Raul Mondesi (26)	2.240	1997	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Raul Mondesi (29)	2.240	2000	R
	Larry Walker (26)	2.240	1993	R
353.	John Vander Wal (37)	2.239	2003	L
354.	Tom Brunansky (31)	2.237	1992	R
355.	Reggie Jackson+ (27)	2.236	1973	L
356.	Al Cowens (27)	2.234	1979	R
	Dave Winfield+ (26)	2.234	1978	R
358.	Bill Sharp (24)	2.233	1974	L
	Elmer Valo (30)	2.233	1951	R
360.	Bobby Bonilla (29)	2.232	1992	R
	Sixto Lezcano (25)	2.232	1979	R
	Lloyd Moseby (20)	2.232	1980	R
	Floyd Robinson (25)	2.232	1961	R
364.	Bob Allison (26)	2.231	1961	R
	Juan Encarnacion (27)	2.231	2003	R
366.	Danny Bautista (28)	2.230	2000	R
367.	Jose Canseco (23)	2.228	1988	R
	Willie Kirkland (28)	2.228	1962	R
369.	Mark Whiten (26)	2.227	1993	R
370.	Jose Cruz (30)	2.226	2004	R
	Tony Gwynn+ (32)	2.226	1992	L
	Raul Mondesi (25)	2.226	1996	R
373.	Bobby Bonds (26)	2.225	1972	R
	Willie Crawford (29)	2.225	1976	L
	Jeremy Hermida (24)	2.225	2008	R
376.	Brad Hawpe (27)	2.224	2006	L
377.	Shawn Green (29)	2.223	2002	L
378.	Jim Wynn (31)	2.222	1973	R
379.	Rocky Colavito (23)	2.221	1957	R
	Jody Gerut (26)	2.221	2004	L
	Randy Winn (35)	2.221	2009	R
382.	Brian Giles (34)	2.220	2005	L
	Jackie Jensen (34)	2.220	1961	R
	Lee Lacy (37)	2.220	1985	R
	Sammy Sosa (27)	2.220	1996	R
386.	Danny Bautista (23)	2.219	1995	R
	Jim Lemon (28)	2.219	1956	R
388.	Ellis Burks (34)	2.217	1999	R
	Warren Cromartie (28)	2.217	1982	L
	Ken Walters (26)	2.217	1960	R
391.	Bob Kennedy (29)	2.216	1950	R
392.	Joe Carter (32)	2.215	1992	R
	Shin-Soo Choo (28)	2.215	2011	L
	Wally Post (24)	2.215	1954	R
395.	Tom Brunansky (25)	2.214	1986	R
	Jay Buhner (27)	2.214	1992	R
	Andre Dawson+ (34)	2.214	1989	R
	Carl Furillo (29)	2.214	1951	R
	Tony Gwynn+ (33)	2.214	1993	L
	Justin Upton (24)	2.214	2012	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
401.	Hank Aaron+ (33)	2.212	1967	R
402.	Tom Brunansky (30)	2.210	1991	R
	Roberto Clemente+ (21)	2.210	1956	R
	Matt Lawton (33)	2.210	2005	R
	Tim Salmon (32)	2.210	2001	R
406.	Vladimir Guerrero (23)	2.209	1998	R
	Leroy Stanton (31)	2.209	1977	R
	Vic Wertz (28)	2.209	1953	R
409.	Hank Aaron+ (22)	2.208	1956	R
	Ben Grieve (26)	2.208	2002	R
	Ken Griffey (27)	2.208	1977	L
	Pat Kelly (30)	2.208	1975	L
413.	Vladimir Guerrero (25)	2.207	2000	R
	Paul Householder (24)	2.207	1983	R
415.	Jackie Jensen (32)	2.206	1959	R
	Chet Lemon (33)	2.206	1988	R
	Sammy Sosa (29)	2.206	1998	R
418.	Josh Reddick (25)	2.205	2012	R
419.	Leroy Stanton (28)	2.202	1974	R
	Milt Thompson (31)	2.202	1990	R
421.	Trot Nixon (32)	2.201	2006	L
	Paul O'Neill (27)	2.201	1990	L
423.	Harold Baines (25)	2.200	1984	L
424.	Lee Lacy (38)	2.199	1986	R
	Carlos Lopez (28)	2.199	1977	R
426.	Candy Maldonado (28)	2.198	1989	R
427.	Vladimir Guerrero (26)	2.197	2001	R
428.	Casey Blake (31)	2.196	2005	R
	Lou Clinton (25)	2.196	1963	R
	Randy Winn (33)	2.196	2007	R
431.	Magglio Ordonez (29)	2.194	2003	R
432.	Carl Furillo (32)	2.193	1954	R
	Raul Mondesi (24)	2.193	1995	R
434.	Jeromy Burnitz (30)	2.190	1999	R
435.	Hank Bauer (30)	2.189	1953	R
436.	Johnny Callison (26)	2.187	1965	R
	Brian Jordan (31)	2.187	1998	R
	Paul O'Neill (33)	2.187	1996	L
	Ichiro Suzuki (32)	2.187	2006	R
440.	Hank Aaron+ (26)	2.186	1960	R
	Milton Bradley (28)	2.186	2006	R
442.	Bob Allison (25)	2.185	1960	R
	Bill Renna (29)	2.185	1954	R
444.	Gabe Gross (29)	2.184	2009	R
	Ben Oglivie (28)	2.184	1977	L
	Nate Schierholtz (25)	2.184	2009	R
447.	Jose Bautista (30)	2.183	2011	R
	Dave Winfield+ (33)	2.183	1985	R
449.	Cesar Geronimo (24)	2.182	1972	L
	Bobby Higginson (27)	2.182	1998	R
Rank	Player (age that year)	Range Factor/9Inn as RF (s.1954)	Year	Throws
	Dale Murphy (31)	2.182	1987	R
	Dave Parker (27)	2.182	1978	R
	Larry Walker (31)	2.182	1998	R
454.	Cal Abrams (30)	2.180	1954	L
	Reggie Sanders (27)	2.180	1995	R
456.	Roger Maris (32)	2.179	1967	R
457.	Hank Bauer (27)	2.178	1950	R
458.	Harold Baines (23)	2.176	1982	L
	Dave Collins (28)	2.176	1981	L
	Nick Markakis (26)	2.176	2010	L
	Orlando Merced (30)	2.176	1997	R
	Merv Rettenmund (29)	2.176	1972	R
463.	George Hendrick (31)	2.174	1981	R
	Alex Rios (23)	2.174	2004	R
	Tony Tarasco (24)	2.174	1995	R
	Will Venable (27)	2.174	2010	L
	Glenn Wilson (30)	2.174	1989	R
468.	Rich Coggins (23)	2.173	1974	L
	J.D. Drew (26)	2.173	2002	R
	J.D. Drew (28)	2.173	2004	R
	Terry Puhl (24)	2.173	1981	R
472.	Tito Francona (22)	2.172	1956	L
	Al Kaline+ (20)	2.172	1955	R
	Don Mueller (24)	2.172	1951	R
	Hunter Pence (26)	2.172	2009	R
476.	Matt Lawton (29)	2.171	2001	R
	Pedro Munoz (23)	2.171	1992	R
478.	Sammy Sosa (32)	2.170	2001	R
479.	Bobby Higginson (33)	2.169	2004	R
	David Justice (27)	2.169	1993	L
	Ryan Ludwick (31)	2.169	2010	L
482.	Bobby Bonds (30)	2.168	1976	R
483.	Hank Aaron+ (32)	2.167	1966	R
	Mike Hershberger (26)	2.167	1966	R
	Bob Kennedy (30)	2.167	1951	R
	Troy O'Leary (27)	2.167	1997	L
487.	Charlie Moore (30)	2.166	1983	R
	Troy O'Leary (25)	2.166	1995	L
	Dave Parker (34)	2.166	1985	R
	Sammy Sosa (28)	2.166	1997	R
491.	Bobby Bonds (28)	2.165	1974	R
	Ruben Sierra (22)	2.165	1988	R
493.	Vladimir Guerrero (30)	2.164	2005	R
	Jose Guillen (27)	2.164	2003	R
	Hosken Powell (24)	2.164	1979	L
496.	Jeff Francoeur (23)	2.162	2007	R
	Franklin Gutierrez (24)	2.162	2007	R
	Nick Swisher (31)	2.162	2012	L
499.	Harold Baines (24)	2.161	1983	L
	Roberto Clemente+ (31)	2.161	1966	R

Baseball Leaders & Baseball Records: Single-Season Career Active Progressive Year-by-Year Top-Tens Yearly League

Note that seasons prior to 1876 are not included in single-season marks, but are included in career marks.

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Single-Season Leaders & Records for Range Factor/9Inn as RF (s.1954)