MLB Park Factors

We use data back to 2000 with new parks only using data from when they were built or reconfigured.

We apply a weight to each factor based on the number of at bats at the park. The more at bats, the higher the weight, up to 100%.

HR (% of hits that are HR)  3B (% of hits that are 3B)  2B (% of hits that are 2B)  Avg (% of ABs that are hits)  SO (% of PAs that are strikeouts)  BB (% of PAs that are walks)

All Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+49%+7%+5%-3%-1%
ATL100%-5%-22%+0%+2%+1%+0%
BAL100%+13%-28%-10%+1%-4%0%
BOS100%-16%-3%+21%+6%-3%-1%
CHC100%+4%-3%-3%+1%+1%+2%
CHW100%+27%-21%-7%-1%+3%+7%
CIN100%+25%-27%0%+0%+5%+2%
CLE100%-4%-35%+4%0%+3%+1%
COL100%+8%+40%0%+17%-14%-3%
DET100%-4%+57%-7%+1%-7%-2%
HOU100%+10%+22%-3%-1%+4%-1%
KC100%-17%+20%+6%+5%-9%-2%
LAA100%-1%-26%-4%-1%+2%-3%
LAD100%+10%-51%-3%-4%+4%-4%
MIA100%-19%+35%-2%-2%-1%-1%
MIL100%+14%-1%+0%-2%+4%+4%
MIN100%-7%+3%+3%+1%-3%+0%
NYM100%+9%-33%-4%-8%+7%+3%
NYY100%+21%-38%-12%0%+3%+3%
OAK100%-9%+6%+2%-4%-2%-1%
PHI100%+18%-12%-2%+0%+3%-1%
PIT100%-18%-13%+6%+1%-8%-3%
SD100%-1%-15%-2%-6%+3%+6%
SEA100%-1%-31%-6%-5%+9%-1%
SF100%-25%+29%+2%-1%-2%-2%
STL100%-14%-15%-4%-1%-6%-2%
TB100%-5%+21%-3%-4%+5%+0%
TEX100%+6%+33%-1%+5%-5%+2%
TOR100%+9%+7%+11%+0%+2%-2%
WAS100%+0%-27%+0%+3%-5%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+3%+52%+6%+5%-2%-1%
ATL100%-9%-5%+1%+3%-1%+0%
BAL100%+13%-24%-12%+1%-3%+2%
BOS100%-11%-20%+18%+6%-1%-1%
CHC100%+10%0%-3%0%+0%+3%
CHW100%+29%-26%-7%0%+2%+7%
CIN100%+25%-27%+5%0%+5%+3%
CLE100%-8%-37%+5%-2%+5%+0%
COL100%+6%+36%+2%+17%-14%-3%
DET100%-4%+59%-7%+1%-7%-3%
HOU100%+10%+19%-3%-1%+4%-1%
KC100%-16%+22%+7%+4%-9%-1%
LAA100%+0%-26%-5%-1%+1%-3%
LAD100%+10%-53%-3%-4%+4%-5%
MIA100%-20%+31%+1%-1%-1%-3%
MIL100%+12%-7%+2%-3%+4%+4%
MIN100%-6%-2%+6%+1%-4%0%
NYM100%+14%-38%-5%-8%+8%+3%
NYY100%+16%-29%-13%+0%+3%+1%
OAK100%-7%+4%+1%-4%-3%-2%
PHI100%+19%-11%-2%+0%+3%-2%
PIT100%-20%-13%+4%+1%-8%-4%
SD100%-1%-9%-5%-7%+3%+10%
SEA100%-1%-23%-6%-6%+9%0%
SF100%-24%+15%0%0%-4%-2%
STL100%-16%-10%-2%-1%-6%-2%
TB100%-8%+19%-3%-4%+5%+0%
TEX100%+4%+28%+1%+5%-5%+2%
TOR100%+11%+19%+12%+1%+1%-1%
WAS100%+2%-25%-2%+2%-5%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+3%+48%+5%+5%-5%0%
ATL100%-3%-20%+0%0%+3%0%
BAL100%+12%-29%-6%+0%-4%-3%
BOS100%-25%+18%+28%+8%-5%+0%
CHC100%-5%-5%-2%+1%+2%+1%
CHW100%+26%-13%-6%-3%+6%+7%
CIN100%+26%-30%-5%+0%+5%+0%
CLE100%0%-33%+4%+1%-1%+0%
COL100%+11%+38%-4%+14%-13%-2%
DET100%-4%+57%-10%-1%-6%+0%
HOU100%+9%+26%-3%0%+3%-1%
KC100%-19%+15%+6%+6%-9%-3%
LAA100%-4%-29%-3%-2%+3%-4%
LAD100%+11%-48%-4%-3%+2%-4%
MIA100%-18%+46%-8%-4%-1%+3%
MIL100%+19%0%-2%-1%+4%+3%
MIN100%-9%+17%-4%+1%-3%+3%
NYM100%+6%-31%-2%-7%+5%+3%
NYY100%+29%-46%-12%+1%+1%+7%
OAK100%-13%+15%+1%-3%-1%-2%
PHI100%+18%-6%-1%+0%+2%+2%
PIT100%-10%-20%+10%+1%-8%0%
SD100%-6%-23%+6%-5%+2%+4%
SEA100%-1%-36%-5%-5%+9%-3%
SF100%-29%+41%+5%-2%+0%-4%
STL100%-10%-17%-7%-2%-4%-2%
TB100%-1%+27%-4%-3%+4%-1%
TEX100%+12%+33%-4%+5%-4%+2%
TOR100%+6%-8%+11%0%+4%-2%
WAS100%-3%-28%+6%+4%-6%-5%