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%+4%+50%+7%+5%-3%-1%
ATL100%-6%-7%-4%0%+3%+1%
BAL100%+12%-29%-10%+1%-3%0%
BOS100%-17%-3%+22%+6%-2%-1%
CHC100%+5%-9%-3%+0%+2%+2%
CHW100%+27%-18%-5%0%+3%+8%
CIN100%+24%-31%-1%0%+4%+1%
CLE100%-6%-36%+5%-1%+3%+1%
COL100%+10%+35%-1%+17%-14%-2%
DET100%-3%+51%-9%+1%-7%-2%
HOU100%+11%+25%-2%0%+4%-1%
KC100%-14%+21%+6%+5%-9%-2%
LAA100%-5%-28%-4%-1%+2%-4%
LAD100%+6%-51%-4%-5%+4%-3%
MIA100%-24%+30%+4%-2%-3%-1%
MIL100%+15%-2%+1%-2%+4%+4%
MIN100%-9%+7%+0%+2%-6%-3%
NYM100%+20%-31%-1%-7%+7%+6%
NYY100%+26%-41%-10%+1%+2%+4%
OAK100%-8%+5%0%-4%-3%-1%
PHI100%+17%-15%-1%+0%+2%-2%
PIT100%-18%-13%+4%+1%-9%-5%
SD100%+3%-10%-3%-5%+4%+4%
SEA100%+2%-41%-3%-5%+9%-3%
SF100%-25%+29%+1%-1%-3%-2%
STL100%-14%-15%-3%-1%-6%0%
TB100%-4%+25%-3%-3%+4%+0%
TEX100%+9%+31%-1%+5%-4%+1%
TOR100%+11%+10%+12%+0%+3%-1%
WAS100%-5%-26%0%+2%-7%-5%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+53%+5%+6%-3%-2%
ATL100%-4%-9%-4%0%+2%+1%
BAL100%+11%-25%-12%+1%-3%+1%
BOS100%-11%-22%+20%+5%-1%-1%
CHC100%+12%-3%-3%0%+2%+3%
CHW100%+30%-23%-7%+0%+1%+9%
CIN100%+26%-28%+1%-1%+4%+2%
CLE100%-10%-40%+6%-2%+6%0%
COL100%+8%+34%+1%+17%-14%-2%
DET100%-3%+54%-9%+0%-7%-3%
HOU100%+11%+27%-3%0%+4%-1%
KC100%-14%+23%+7%+4%-9%+0%
LAA100%-3%-28%-5%-1%+1%-3%
LAD100%+6%-56%-2%-5%+4%-4%
MIA100%-22%+37%+6%0%-3%-5%
MIL100%+12%-9%+4%-2%+4%+5%
MIN100%-5%-1%+1%+4%-7%-3%
NYM100%+24%-39%-5%-6%+7%+9%
NYY100%+21%-38%-11%+0%+3%+3%
OAK100%-6%+1%-1%-4%-3%-2%
PHI100%+17%-14%0%+0%+3%-4%
PIT100%-22%-14%+2%+1%-8%-6%
SD100%-3%+7%-5%-7%+3%+10%
SEA100%+2%-40%-2%-8%+11%-3%
SF100%-23%+13%-1%+0%-5%-1%
STL100%-17%-13%-1%-1%-6%-1%
TB100%-7%+27%-5%-3%+4%0%
TEX100%+6%+24%+0%+5%-6%+2%
TOR100%+13%+24%+14%+1%+1%+1%
WAS100%-5%-24%-2%+3%-6%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+43%+6%+6%-5%+1%
ATL100%-7%-10%-5%0%+3%+4%
BAL100%+11%-31%-6%0%-3%-1%
BOS100%-26%+23%+27%+8%-5%+0%
CHC100%-4%-13%-2%0%+3%+1%
CHW100%+21%-9%-3%-1%+6%+8%
CIN100%+23%-32%-4%0%+4%-1%
CLE100%0%-35%+3%+1%-1%+1%
COL100%+12%+32%-4%+13%-15%-2%
DET100%0%+48%-11%-1%-7%-2%
HOU100%+11%+21%-2%+0%+2%-1%
KC100%-17%+18%+5%+5%-9%-3%
LAA100%-9%-29%-3%-2%+3%-5%
LAD100%+9%-44%-5%-4%+3%-3%
MIA100%-28%+23%-4%-1%-2%+3%
MIL100%+21%+6%-1%+0%+4%+2%
MIN100%-19%+17%-6%+2%-6%-1%
NYM100%+19%-26%+4%-8%+6%+6%
NYY100%+31%-44%-9%+2%0%+8%
OAK100%-13%+19%-1%-3%-3%0%
PHI100%+17%-10%0%+1%+0%+1%
PIT100%-8%-20%+7%+1%-8%-2%
SD100%+4%-26%+8%-5%+6%+1%
SEA100%+6%-42%-2%-4%+7%-4%
SF100%-29%+43%+3%-2%0%-5%
STL100%-9%-13%-7%0%-5%+0%
TB100%+2%+29%-4%-3%+4%-1%
TEX100%+14%+33%-4%+4%-2%-1%
TOR100%+7%-8%+12%0%+6%-2%
WAS100%-8%-25%+4%+2%-8%-6%