Minor League Park Factors 2022

Variety is the spice of life—especially in the minor leagues.

Teams in the California and Pacific Coast leagues averaged about six runs per game this season. Teams in the Eastern, Florida State, Midwest and Northwest leagues averaged fewer than five.

On top of radically different run environments in the various minor leagues, the individual ballparks within those leagues can vary wildly in terms of run-scoring context. Baseball America helps you make sense of it all with its annual installment of minor league park factors.

Park factors presented here are basic comparisons of minor league teams’ production in home games compared with road games. The result is park factor (PF), where 100 is average and 120 signifies that the outcome is 20% more frequent in home games than road games. Conversely, a PF of 80 indicates that outcome is 20% less common in home games.

The multiplier (Mult) column halves the impact of park factor to reflect that players play only half their games at home. In this way, park effects can be applied directly to players’ statistics.

The final two columns place each minor league park in the overall context of all 120 full-season teams. Pctile is a percentile ranking for each club’s team run context (TRC), where a higher run environment equals a higher score.

TRC is simply the league rate of runs scored adjusted by each team’s park factor. For example, Double-A Amarillo with a 6.90 TRC saw the most runs in its games. Low-A Palm Beach saw the fewest with a 4.35 TRC.

Note: Grade expresses each league’s R/9 rate on the 20-80 scouting scale.

International League (Triple-A)

League Averages
5.16 R/9 • Grade: 48 on 20-80 scouting scale
.251/.336/.414 • .307 BABIP • 16.1 HR and 13.7 SB per 550 PA
4.64 ERA • 1.40 WHIP • 23.3 SO% and 10.1 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Buffalo	TOR	91	0.956	113	1.065	89	0.947	4.93	34%
Charlotte	CWS	120	1.101	169	1.345	103	1.015	5.68	82%
Columbus	CLE	95	0.973	108	1.041	99	0.997	5.02	43%
Durham	TB	113	1.065	138	1.189	110	1.051	5.50	74%
Gwinnett	ATL	88	0.942	63	0.816	99	0.993	4.86	26%
Indianapolis	PIT	88	0.941	83	0.914	101	1.007	4.86	25%
Iowa	CHC	111	1.055	117	1.085	97	0.985	5.44	69%
Jacksonville	MIA	90	0.950	80	0.899	97	0.983	4.90	31%
Lehigh Valley	PHI	96	0.980	81	0.903	96	0.979	5.06	48%
Louisville	CIN	110	1.050	122	1.108	99	0.995	5.42	68%
Memphis	STL	101	1.005	95	0.975	101	1.003	5.19	56%
Nashville	MIL	87	0.937	68	0.841	100	1.000	4.83	24%
Norfolk	BAL	105	1.023	101	1.004	95	0.975	5.28	62%
Omaha	KC	117	1.083	117	1.084	103	1.015	5.59	78%
Rochester	WSH	114	1.069	116	1.078	104	1.018	5.52	75%
Scranton/W-B	NYY	92	0.960	94	0.968	97	0.987	4.95	38%
St. Paul	MIN	97	0.986	92	0.961	99	0.994	5.00	52%
Syracuse	NYM	94	0.970	102	1.008	99	0.994	5.01	41%
Toledo	DET	89	0.945	74	0.871	103	1.017	4.88	29%
Worcester	BOS	105	1.025	97	0.984	109	1.043	5.29	64%

 

Pacific Coast League (Triple-A)

League Averages
5.92 R/9 • Grade: 65 on 20-80 scouting scale
.266/.351/.453 • .321 BABIP • 19.0 HR and 12.6 SB per 550 PA
5.40 ERA • 1.51 WHIP • 23.0 SO% and 10.5 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Albuquerque	COL	120	1.101	122	1.111	105	1.026	6.52	97%
El Paso	SD	123	1.114	122	1.112	111	1.057	6.59	99%
Las Vegas	OAK	122	1.108	153	1.263	107	1.036	6.56	98%
Oklahoma City	LAD	95	0.973	87	0.933	98	0.990	5.76	86%
Reno	ARI	106	1.028	87	0.934	103	1.013	6.09	91%
Round Rock	TEX	88	0.940	95	0.973	94	0.969	5.56	76%
Sacramento	SF	76	0.878	75	0.875	89	0.943	5.20	58%
Salt Lake	LAA	112	1.058	100	1.001	110	1.052	6.26	95%
Sugar Land	HOU	79	0.893	74	0.871	90	0.950	5.29	63%
Tacoma	SEA	89	0.944	96	0.978	92	0.961	5.59	79%

 

Eastern League (Double-A)

League Averages
4.87 R/9 • Grade: 42 on 20-80 scouting scale
.240/.325/.403 • .300 BABIP • 16.2 HR and 13.6 SB per 550 PA
4.37 ERA • 1.33 WHIP • 25.3 SO% and 9.8 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Akron	CLE	106	1.032	93	0.967	101	1.006	5.03	44%
Altoona	PIT	109	1.044	95	0.973	102	1.012	5.08	51%
Binghamton	NYM	95	0.974	103	1.014	97	0.986	4.74	13%
Bowie	BAL	120	1.100	147	1.237	102	1.008	5.36	66%
Erie	DET	104	1.018	77	0.885	109	1.047	4.96	39%
Harrisburg	WSH	86	0.928	96	0.979	96	0.979	4.52	7%
Hartford	COL	96	0.978	91	0.956	107	1.034	4.76	17%
New Hampshire	TOR	93	0.967	102	1.009	100	1.002	4.71	12%
Portland	BOS	105	1.023	95	0.973	106	1.032	4.98	40%
Reading	PHI	98	0.992	100	1.000	100	1.000	4.83	24%
Richmond	SF	96	0.979	108	1.039	90	0.949	4.77	18%
Somerset	NYY	97	0.983	103	1.016	90	0.952	4.79	20%

 

Southern League (Double-A)

League Averages
5.01 R/9 • Grade: 49 on 20-80 scouting scale
.251/.341/.411 • .316 BABIP • 15.7 HR and 17.6 SB per 550 PA
4.65 ERA • 1.42 WHIP • 24.9 SO% and 10.5 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Biloxi	MIL	110	1.049	121	1.105	95	0.973	5.44	70%
Birmingham	CWS	97	0.987	76	0.882	104	1.021	5.12	54%
Chattanooga	CIN	108	1.038	88	0.938	111	1.056	5.39	67%
Mississippi	ATL	84	0.921	62	0.811	98	0.992	4.78	18%
Montgomery	TB	100	0.998	119	1.096	104	1.022	5.18	55%
Pensacola	MIA	100	1.001	102	1.009	99	0.996	5.20	57%
Rocket City	LAA	102	1.008	135	1.174	94	0.971	5.23	61%
Tennessee	CHC	100	1.002	112	1.061	95	0.974	5.20	59%

 

Texas League (Double-A)

League Averages
5.71 R/9 • Grade: 60 on 20-80 scouting scale
.260/.351/.424 • .319 BABIP • 16.4 HR and 15.0 SB per 550 PA
5.11 ERA • 1.49 WHIP • 23.2 SO% and 11.0 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Amarillo	ARI	142	1.209	165	1.325	113	1.063	6.90	100%
Arkansas	SEA	80	0.901	69	0.847	92	0.962	5.14	55%
Corpus Christi	HOU	99	0.995	97	0.987	92	0.962	5.68	82%
Frisco	TEX	91	0.957	86	0.929	96	0.980	5.46	71%
Midland	OAK	95	0.977	68	0.840	111	1.053	5.58	77%
NW Arkansas	KC	103	1.016	97	0.983	101	1.004	5.80	87%
San Antonio	SD	77	0.887	56	0.779	93	0.963	5.06	50%
Springfield	STL	114	1.071	147	1.237	102	1.011	6.12	93%
Tulsa	LAD	88	0.940	93	0.964	92	0.958	5.37	66%
Wichita	MIN	114	1.069	120	1.101	107	1.037	6.10	92%

 

Midwest League (High-A)

League Averages
4.83 R/9 • Grade: 41 on 20-80 scouting scale
.237/.327/.383 • .302 BABIP • 13.4 HR and 15.3 SB per 550 PA
4.25 ERA • 1.34 WHIP • 25.2 SO% and 10.4 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Beloit	MIA	85	0.923	64	0.821	94	0.968	4.46	2%
Cedar Rapids	MIN	100	0.998	104	1.020	99	0.994	4.82	23%
Dayton	CIN	109	1.045	109	1.043	102	1.011	5.05	47%
Fort Wayne	SD	80	0.902	71	0.854	98	0.990	4.36	1%
Great Lakes	LAD	95	0.976	111	1.054	93	0.965	4.71	13%
Lake County	CLE	110	1.049	161	1.306	100	0.998	5.07	50%
Lansing	OAK	127	1.137	122	1.110	113	1.066	5.49	73%
Peoria	STL	102	1.008	108	1.038	101	1.003	4.87	27%
Quad Cities	KC	108	1.041	96	0.980	108	1.041	5.03	45%
South Bend	CHC	105	1.023	119	1.093	98	0.992	4.94	36%
West Michigan	DET	85	0.926	60	0.800	93	0.967	4.47	3%
Wisconsin	MIL	99	0.997	92	0.960	101	1.004	4.82	22%

 

Northwest League (High-A)

League Averages
4.93 R/9 • Grade: 43 on 20-80 scouting scale
.238/.325/.385 • .310 BABIP • 13.3 HR and 17.7 SB per 550 PA
4.24 ERA • 1.33 WHIP • 26.5 SO% and 9.9 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Eugene	SF	93	0.966	107	1.037	99	0.996	4.76	16%
Everett	SEA	125	1.125	154	1.272	110	1.050	5.55	76%
Hillsboro	ARI	87	0.933	53	0.764	93	0.963	4.60	8%
Spokane	COL	121	1.107	165	1.324	107	1.035	5.46	71%
Tri-City	LAA	82	0.912	47	0.734	101	1.005	4.50	4%
Vancouver	TOR	94	0.971	100	1.001	90	0.952	4.79	19%

 

South Atlantic League (High-A)

League Averages
5.10 R/9 • Grade: 47 on 20-80 scouting scale
.244/.334/.391 • .312 BABIP • 13.9 HR and 16.8 SB per 550 PA
4.48 ERA • 1.38 WHIP • 25.2 SO% and 10.4 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Aberdeen	BAL	94	0.969	84	0.921	100	1.000	4.94	37%
Asheville	HOU	125	1.125	145	1.226	109	1.045	5.74	85%
Bowling Green	TB	97	0.987	105	1.024	92	0.958	5.03	45%
Brooklyn	NYM	86	0.932	86	0.931	101	1.006	4.75	14%
Greensboro	PIT	121	1.104	156	1.280	95	0.973	5.63	81%
Greenville	BOS	98	0.988	119	1.097	104	1.018	5.04	46%
Hickory	TEX	101	1.004	98	0.990	105	1.023	5.12	53%
Hudson Valley	NYY	95	0.973	95	0.975	100	0.998	4.96	39%
Jersey Shore	PHI	109	1.043	87	0.935	108	1.040	5.32	65%
Rome	ATL	83	0.913	61	0.806	96	0.982	4.66	11%
Wilmington	WSH	91	0.956	81	0.907	91	0.953	4.88	28%
Winston-Salem	CWS	96	0.982	73	0.863	101	1.003	5.01	42%

 

California League (Low-A)

League Averages
6.07 R/9 • Grade 68 on 20-80 scouting scale
.256/.355/.405 • .330 BABIP • 12.7 HR and 18.0 SB per 550 PA
5.13 ERA • 1.51 WHIP • 24.7 SO% and 11.5 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Fresno	COL	92	0.961	88	0.941	96	0.982	5.83	87%
Inland Empire	LAA	109	1.043	75	0.874	109	1.043	6.33	96%
Lake Elsinore	SD	101	1.005	79	0.895	98	0.988	6.10	92%
Modesto	SEA	94	0.971	52	0.760	105	1.024	5.89	89%
R. Cucamonga	LAD	102	1.012	141	1.207	95	0.976	6.14	94%
San Jose	SF	100	1.001	119	1.096	95	0.976	6.08	90%
Stockton	OAK	111	1.056	144	1.221	104	1.021	6.41	97%
Visalia	ARI	93	0.963	123	1.117	99	0.994	5.85	88%

 

Carolina League (Low-A)

League Averages
5.18 R/9 • Grade: 49 on 20-80 scouting scale
.238/.336/.368 • .313 BABIP • 10.5 HR and 20.9 SB per 550 PA
4.42 ERA • 1.40 WHIP • 25.5 SO% and 11.4 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Augusta	ATL	95	0.977	133	1.164	94	0.969	5.06	49%
Carolina	MIL	119	1.097	97	0.987	105	1.026	5.68	83%
Charleston, SC	TB	103	1.014	74	0.872	100	1.000	5.25	61%
Columbia	KC	116	1.081	128	1.139	103	1.013	5.60	80%
Delmarva	BAL	90	0.948	88	0.939	94	0.972	4.91	33%
Down East	TEX	89	0.944	88	0.941	95	0.974	4.89	29%
Fayetteville	HOU	91	0.953	105	1.023	95	0.975	4.94	35%
Fredericksburg	WSH	102	1.009	95	0.974	99	0.996	5.23	60%
Kannapolis	CWS	121	1.107	137	1.185	109	1.044	5.73	84%
Lynchburg	CLE	89	0.944	108	1.041	97	0.985	4.89	29%
Myrtle Beach	CHC	84	0.919	78	0.891	100	0.999	4.76	15%
Salem	BOS	111	1.055	84	0.919	110	1.051	5.46	72%

 

Florida State League (Low-A)

League Averages
4.62 R/9 • Grade: 37 on 20-80 scouting scale
.233/.327/.361 • .311 BABIP • 10.9 HR and 16.9 SB per 550 PA
3.92 ERA • 1.32 WHIP • 26.8 SO% and 10.5 BB%

		Runs		Home Runs		BABIP		Overall
Team	Org	PF	Mult	PF	Mult	PF	Mult	TRC	Pctile
Bradenton	PIT	98	0.989	128	1.141	93	0.965	4.57	8%
Clearwater	PHI	95	0.976	100	1.001	96	0.982	4.51	6%
Daytona	CIN	112	1.062	117	1.085	109	1.043	4.91	32%
Dunedin	TOR	113	1.064	134	1.169	102	1.009	4.92	34%
Fort Myers	MIN	101	1.006	108	1.042	102	1.009	4.65	10%
Jupiter	MIA	93	0.966	70	0.850	96	0.981	4.46	3%
Lakeland	DET	99	0.996	95	0.974	102	1.011	4.60	9%
Palm Beach	STL	88	0.942	57	0.783	103	1.014	4.35	0%
St. Lucie	NYM	108	1.039	102	1.012	95	0.976	4.80	21%
Tampa	NYY	95	0.974	103	1.013	104	1.018	4.50	5%

Team Run Context By Organization

Players in organizations with affiliates in the California, Pacific Coast and Texas leagues play games in higher run environments. Much higher in some cases.

At the extremes, Amarillo played in an environment that featured 332 more runs than Jupiter over the course of 130 games. This means that runs created in Jupiter were more valuable than those in Amarillo. Conversely, runs saved in Amarillo had more value than those in Jupiter.

Weighting the TRC of each organization’s four full-season affiliates for the approximate number of league games yields the results below. The results show that Athletics players play in the highest overall run environment in the minor leagues as they move from Stockton to Lansing to Midland to Las Vegas.

Overall, prospects for the A’s, D-backs, Rockies, Angels and Padres receive the biggest offensive boost from league and park context. These organizations have affiliates in the Pacific Coast and Cal leagues in common.

At the other end of the spectrum, Tigers, Marlins, Yankees, Mets and Blue Jays prospects play in games featuring the fewest number of runs. These organizations all have the Florida State, Eastern and International league affiliates in common.

Rk	Organization	Low-A	High-A	Double-A	Triple-A	Weighted TRC
1	Athletics	6.41	5.49	5.58	6.56	6.02
2	D-backs	5.85	4.60	6.90	6.09	5.89
3	Rockies	5.83	5.46	4.76	6.52	5.66
4	Angels	6.33	4.50	5.23	6.26	5.60
5	Padres	6.10	4.36	5.06	6.59	5.56
6	Mariners	5.89	5.55	5.14	5.59	5.54
7	Royals	5.60	5.03	5.80	5.59	5.51
8	Dodgers	6.14	4.71	5.37	5.76	5.50
9	Astros	4.94	5.74	5.68	5.29	5.41
10	White Sox	5.73	5.01	5.12	5.68	5.39
11	Rangers	4.89	5.12	5.46	5.56	5.27
12	Rays	5.25	5.03	5.18	5.50	5.25
13	Reds	4.91	5.05	5.39	5.42	5.20
14(t)	Red Sox	5.46	5.04	4.98	5.29	5.19
14(t)	Giants	6.08	4.76	4.77	5.20	5.19
16	Brewers	5.68	4.82	5.44	4.83	5.19
17	Twins	4.65	4.82	6.10	5.09	5.18
18	Cardinals	4.35	4.87	6.12	5.19	5.15
19	Orioles	4.91	4.94	5.36	5.28	5.13
20	Cubs	4.76	4.94	5.20	5.44	5.10
21	Nationals	5.23	4.88	4.52	5.52	5.04
22	Pirates	4.57	5.63	5.08	4.86	5.03
23	Guardians	4.89	5.07	5.03	5.02	5.00
24	Phillies	4.51	5.32	4.83	5.06	4.93
25	Braves	5.06	4.66	4.78	4.86	4.84
26	Blue Jays	4.92	4.79	4.71	4.93	4.84
27	Mets	4.80	4.75	4.74	5.01	4.83
28	Yankees	4.50	4.96	4.79	4.95	4.81
29	Marlins	4.46	4.46	5.20	4.90	4.77
30	Tigers	4.60	4.47	4.96	4.88	4.74