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%-2%+48%+7%+5%-3%0%
ATL100%-5%-14%-1%+1%+2%-1%
BAL100%+11%-26%-10%+1%-4%-2%
BOS100%-16%+0%+20%+6%-3%-1%
CHC100%+3%+0%-3%0%+1%+2%
CHW100%+24%-22%-6%-1%+2%+6%
CIN100%+27%-29%-1%+1%+4%+3%
CLE100%-5%-35%+4%-1%+3%+1%
COL100%+6%+42%+0%+16%-14%-2%
DET100%-4%+54%-7%+1%-7%-1%
HOU100%+10%+22%-2%0%+4%-1%
KC100%-17%+24%+7%+5%-9%-1%
LAA100%+1%-22%-5%-1%+2%-3%
LAD100%+11%-50%-3%-4%+3%-4%
MIA100%-14%+27%+1%-1%-2%+1%
MIL100%+14%+1%+1%-2%+6%+4%
MIN100%-6%+4%+4%+2%-3%+1%
NYM100%+7%-28%-4%-8%+7%+4%
NYY100%+19%-33%-11%-1%+2%+3%
OAK100%-10%+7%+3%-3%-2%-1%
PHI100%+18%-10%-2%+0%+3%-1%
PIT100%-17%-14%+6%+1%-8%-3%
SD100%+2%-17%-3%-5%+4%+4%
SEA100%0%-36%-6%-6%+10%-3%
SF100%-24%+26%+2%-1%-2%-3%
STL100%-14%-17%-3%-1%-5%-3%
TB100%-4%+21%-3%-4%+4%+0%
TEX100%+6%+29%-1%+4%-3%+2%
TOR100%+9%+3%+11%+0%+2%-1%
WAS100%-1%-23%+0%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%0%+50%+5%+5%-3%-1%
ATL100%-7%-2%+3%+3%+0%0%
BAL100%+9%-22%-12%+1%-4%0%
BOS100%-10%-17%+15%+6%-1%-1%
CHC100%+9%+1%-4%-1%+1%+3%
CHW100%+26%-27%-6%0%+1%+6%
CIN100%+26%-29%+3%+0%+4%+4%
CLE100%-9%-34%+5%-2%+5%+0%
COL100%+5%+38%+2%+17%-14%-3%
DET100%-4%+52%-6%+1%-7%-3%
HOU100%+10%+18%-3%-1%+4%-1%
KC100%-17%+27%+8%+4%-9%-1%
LAA100%+1%-24%-5%0%+1%-2%
LAD100%+12%-54%-3%-4%+4%-5%
MIA100%-16%+27%+4%+0%-1%0%
MIL100%+12%-5%+3%-3%+6%+4%
MIN100%-6%-4%+6%+2%-3%+1%
NYM100%+11%-33%-7%-9%+7%+5%
NYY100%+15%-25%-11%0%+2%+1%
OAK100%-9%+4%+2%-4%-2%-1%
PHI100%+18%-10%-2%0%+3%-2%
PIT100%-20%-14%+4%+1%-7%-4%
SD100%+2%-7%-6%-6%+4%+5%
SEA100%+2%-31%-6%-7%+10%-1%
SF100%-24%+15%+0%0%-4%-2%
STL100%-16%-11%-2%-1%-6%-3%
TB100%-6%+19%-3%-3%+5%+0%
TEX100%+5%+25%+1%+4%-4%+2%
TOR100%+12%+16%+11%+0%+1%-1%
WAS100%+1%-19%-1%+1%-3%-3%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%-3%+48%+6%+5%-5%-1%
ATL100%-2%-13%-4%0%+5%+0%
BAL100%+13%-30%-7%+1%-4%-4%
BOS100%-25%+18%+28%+7%-6%+1%
CHC100%-7%+3%-2%+0%+3%+1%
CHW100%+23%-14%-6%-2%+5%+6%
CIN100%+29%-30%-5%+0%+5%+2%
CLE100%+1%-35%+3%+1%-1%+0%
COL100%+7%+38%-4%+14%-13%-2%
DET100%-3%+62%-10%0%-6%+1%
HOU100%+9%+26%-3%+0%+4%-2%
KC100%-19%+18%+6%+6%-9%-1%
LAA100%0%-24%-5%-2%+4%-4%
LAD100%+12%-45%-4%-3%+2%-5%
MIA100%-12%+28%-5%-2%-2%+3%
MIL100%+18%+3%-2%-1%+5%+3%
MIN100%-9%+17%-2%+2%-3%+3%
NYM100%+5%-27%-1%-7%+6%+5%
NYY100%+27%-42%-11%0%+0%+7%
OAK100%-13%+15%+2%-3%-1%-1%
PHI100%+19%-4%-1%+1%+2%+1%
PIT100%-10%-21%+10%+1%-9%0%
SD100%+0%-27%+6%-5%+3%+4%
SEA100%-4%-39%-5%-7%+10%-5%
SF100%-26%+36%+4%-2%+1%-4%
STL100%-10%-19%-7%-2%-4%-3%
TB100%0%+26%-4%-4%+5%-1%
TEX100%+11%+29%-3%+4%-4%+2%
TOR100%+5%-11%+11%0%+4%-2%
WAS100%-5%-25%+4%+4%-6%-5%