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%+47%+7%+5%-3%-1%
ATL100%-4%-13%-1%+1%+2%0%
BAL100%+11%-26%-10%+1%-4%-2%
BOS100%-16%0%+20%+6%-3%-1%
CHC100%+3%+1%-3%+0%+1%+2%
CHW100%+25%-22%-6%-1%+2%+6%
CIN100%+27%-29%-1%+1%+4%+3%
CLE100%-5%-35%+4%-1%+3%+1%
COL100%+6%+41%+0%+16%-14%-2%
DET100%-4%+54%-7%+1%-7%-1%
HOU100%+10%+23%-2%0%+4%-1%
KC100%-17%+23%+7%+5%-9%-1%
LAA100%+2%-23%-5%-1%+2%-3%
LAD100%+11%-50%-3%-4%+3%-4%
MIA100%-15%+27%+1%-1%-2%+1%
MIL100%+14%+1%+1%-2%+6%+4%
MIN100%-5%+4%+3%+2%-3%+1%
NYM100%+7%-29%-4%-8%+7%+4%
NYY100%+20%-35%-11%0%+2%+3%
OAK100%-10%+7%+3%-4%-2%0%
PHI100%+18%-10%-2%+0%+3%-1%
PIT100%-17%-14%+6%+1%-8%-3%
SD100%+2%-17%-3%-5%+4%+4%
SEA100%-1%-36%-6%-6%+10%-3%
SF100%-25%+26%+2%-1%-2%-3%
STL100%-14%-16%-4%-1%-6%-2%
TB100%-4%+21%-3%-4%+5%+0%
TEX100%+7%+28%-1%+4%-4%+2%
TOR100%+9%+3%+11%0%+2%-1%
WAS100%0%-23%+0%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
CIN100%+26%-29%+3%+0%+4%+4%
CHW100%+26%-27%-6%+0%+1%+6%
PHI100%+18%-9%-2%0%+2%-2%
NYY100%+15%-26%-11%0%+2%+1%
MIL100%+12%-5%+3%-3%+6%+4%
TOR100%+11%+17%+12%+0%+1%0%
NYM100%+11%-33%-7%-9%+8%+5%
LAD100%+11%-54%-3%-4%+4%-5%
HOU100%+10%+19%-3%-1%+4%-1%
CHC100%+9%+2%-4%0%+1%+3%
BAL100%+9%-22%-12%+1%-4%+0%
TEX100%+5%+25%+0%+4%-4%+2%
COL100%+5%+38%+2%+17%-14%-3%
SD100%+3%-7%-6%-6%+4%+6%
SEA100%+2%-29%-6%-6%+10%-1%
WAS100%+2%-19%-1%+1%-3%-3%
LAA100%+2%-25%-5%0%+1%-2%
ARI100%+0%+50%+5%+5%-3%-1%
DET100%-4%+53%-6%+1%-7%-3%
MIN100%-5%-4%+6%+2%-3%+1%
TB100%-6%+20%-3%-3%+5%+0%
ATL100%-7%-3%+2%+3%+0%+0%
CLE100%-9%-34%+5%-2%+5%+0%
OAK100%-9%+4%+1%-4%-2%-1%
BOS100%-10%-17%+15%+6%-1%-1%
STL100%-15%-11%-2%-1%-6%-2%
MIA100%-16%+28%+4%+0%-1%-1%
KC100%-17%+27%+8%+4%-9%-1%
PIT100%-20%-14%+4%+1%-8%-4%
SF100%-24%+15%+0%0%-4%-2%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
CIN100%+29%-30%-6%+0%+5%+1%
NYY100%+28%-44%-11%+0%+1%+7%
CHW100%+23%-15%-6%-2%+5%+6%
PHI100%+19%-5%-1%+1%+3%+1%
MIL100%+18%+2%-1%-1%+5%+4%
BAL100%+13%-29%-7%+1%-4%-4%
LAD100%+12%-45%-4%-3%+2%-5%
TEX100%+11%+28%-3%+4%-4%+2%
HOU100%+9%+28%-3%+0%+4%-2%
COL100%+8%+37%-4%+14%-13%-2%
NYM100%+6%-28%-1%-8%+6%+5%
TOR100%+5%-11%+11%0%+4%-2%
CLE100%+1%-35%+3%+1%-1%+0%
LAA100%0%-24%-5%-2%+4%-4%
ATL100%0%-11%-4%0%+5%0%
TB100%0%+27%-3%-4%+5%-1%
SD100%-1%-28%+6%-5%+3%+4%
ARI100%-3%+47%+6%+5%-5%-1%
DET100%-4%+61%-10%-1%-6%+1%
WAS100%-5%-25%+4%+4%-6%-5%
SEA100%-5%-40%-6%-6%+9%-6%
CHC100%-7%+3%-2%+0%+3%+0%
MIN100%-9%+17%-3%+2%-2%+3%
PIT100%-10%-22%+10%+1%-9%0%
STL100%-10%-18%-7%-2%-4%-3%
MIA100%-13%+29%-6%-2%-2%+4%
OAK100%-13%+16%+2%-3%-1%-1%
KC100%-19%+19%+6%+6%-9%-1%
BOS100%-25%+18%+28%+7%-6%+1%
SF100%-27%+36%+4%-2%+0%-4%