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%+5%+48%+7%+5%-3%-1%
ATL100%-6%-7%-4%0%+3%+1%
BAL100%+11%-29%-10%+1%-3%+0%
BOS100%-18%-4%+21%+6%-2%-1%
CHC100%+5%-7%-2%+0%+2%+2%
CHW100%+27%-17%-5%-1%+3%+8%
CIN100%+24%-28%-1%0%+4%+1%
CLE100%-5%-37%+5%-1%+3%+1%
COL100%+10%+37%-1%+17%-14%-2%
DET100%-2%+48%-9%+1%-7%-2%
HOU100%+11%+24%-3%0%+4%-1%
KC100%-15%+22%+6%+4%-9%-2%
LAA100%-5%-27%-5%-1%+1%-4%
LAD100%+7%-51%-3%-5%+4%-3%
MIA100%-21%+30%+2%-2%-2%+1%
MIL100%+15%-2%+2%-1%+4%+4%
MIN100%-7%+6%0%+3%-6%-2%
NYM100%+12%-29%-1%-7%+7%+5%
NYY100%+28%-40%-9%+1%+2%+4%
OAK100%-7%+7%+1%-4%-2%0%
PHI100%+18%-14%-1%+0%+3%-3%
PIT100%-18%-14%+4%+1%-8%-5%
SD100%-3%-7%-3%-5%+3%+3%
SEA100%+2%-36%-4%-5%+9%0%
SF100%-25%+26%+0%-1%-2%-2%
STL100%-14%-14%-3%-1%-5%+0%
TB100%-4%+25%-4%-3%+4%+0%
TEX100%+8%+30%-1%+5%-4%+1%
TOR100%+10%+10%+12%+1%+3%-1%
WAS100%-4%-27%0%+3%-7%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+8%+52%+6%+6%-3%-2%
ATL100%-4%-9%-4%0%+2%+1%
BAL100%+10%-24%-11%+1%-3%+1%
BOS100%-12%-23%+19%+5%-1%-1%
CHC100%+12%-2%-3%0%+1%+3%
CHW100%+29%-22%-7%+0%+2%+9%
CIN100%+27%-23%+2%-1%+4%+2%
CLE100%-10%-40%+6%-2%+6%0%
COL100%+7%+34%+1%+17%-14%-3%
DET100%-2%+50%-8%+0%-7%-3%
HOU100%+11%+25%-2%0%+4%-1%
KC100%-15%+25%+8%+4%-9%+0%
LAA100%-3%-28%-6%0%+1%-3%
LAD100%+6%-55%-2%-5%+4%-4%
MIA100%-20%+36%+5%-1%-4%-3%
MIL100%+13%-9%+4%-2%+4%+5%
MIN100%-3%+0%+0%+4%-6%-3%
NYM100%+14%-38%-5%-7%+8%+6%
NYY100%+23%-35%-11%+1%+2%+3%
OAK100%-5%+4%0%-4%-3%-2%
PHI100%+18%-14%-1%+0%+3%-4%
PIT100%-22%-15%+2%+1%-8%-6%
SD100%-8%+12%-5%-6%+3%+9%
SEA100%+1%-32%-4%-7%+10%+1%
SF100%-23%+11%-1%0%-5%-1%
STL100%-16%-9%-2%-1%-5%-1%
TB100%-7%+26%-5%-3%+4%+0%
TEX100%+6%+25%+0%+5%-6%+2%
TOR100%+12%+23%+13%+1%+1%0%
WAS100%-5%-25%-2%+3%-6%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+40%+6%+6%-5%+0%
ATL100%-6%-9%-5%-1%+4%+3%
BAL100%+10%-32%-7%0%-3%-1%
BOS100%-26%+22%+27%+7%-5%+0%
CHC100%-4%-12%-1%+0%+3%+1%
CHW100%+22%-7%-3%-2%+7%+8%
CIN100%+22%-28%-5%0%+4%0%
CLE100%0%-34%+4%+1%-1%+1%
COL100%+11%+36%-4%+14%-15%-1%
DET100%-1%+45%-11%-1%-7%-2%
HOU100%+11%+21%-3%0%+2%-1%
KC100%-17%+17%+5%+5%-9%-3%
LAA100%-9%-27%-3%-1%+3%-5%
LAD100%+11%-44%-5%-4%+3%-3%
MIA100%-25%+23%-7%-2%0%+3%
MIL100%+21%+5%-1%+0%+5%+2%
MIN100%-17%+17%-5%+3%-6%+1%
NYM100%+12%-20%+3%-8%+4%+6%
NYY100%+32%-43%-8%+1%+0%+7%
OAK100%-13%+20%-1%-3%-2%+0%
PHI100%+17%-10%+0%+1%+0%+1%
PIT100%-8%-21%+7%+1%-8%-2%
SD100%-4%-25%+8%-5%+5%+0%
SEA100%+6%-40%-2%-5%+7%-1%
SF100%-30%+39%+3%-2%0%-5%
STL100%-8%-13%-6%-1%-5%+0%
TB100%+1%+29%-4%-3%+3%-1%
TEX100%+14%+31%-4%+4%-2%0%
TOR100%+7%-8%+12%0%+5%-2%
WAS100%-7%-27%+4%+3%-8%-6%