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%-4%-1%
ATL100%-4%-7%-4%+0%+2%+1%
BAL100%+12%-29%-10%+1%-3%+1%
BOS100%-17%-3%+22%+6%-2%-1%
CHC100%+5%-10%-2%+1%+3%+2%
CHW100%+29%-21%-5%+0%+3%+8%
CIN100%+26%-29%-1%-1%+4%+1%
CLE100%-6%-35%+3%-2%+4%+0%
COL100%+11%+34%-1%+16%-14%-2%
DET100%-4%+48%-11%+1%-8%-2%
HOU100%+12%+23%-3%+1%+2%-1%
KC100%-13%+18%+5%+5%-9%-2%
LAA100%-7%-28%-3%-1%+1%-5%
LAD100%+7%-50%-5%-4%+4%-1%
MIA91%-26%+61%+3%+1%-7%-1%
MIL100%+14%-5%+0%-2%+4%+5%
MIN100%-14%+25%+1%+2%-5%-2%
NYM92%+16%-27%-2%-7%+6%+5%
NYY100%+21%-40%-9%+2%+1%+4%
OAK100%-6%+5%0%-4%-2%+1%
PHI100%+16%-13%0%+1%+2%-3%
PIT100%-19%-18%+5%+1%-9%-6%
SD59%+0%+6%-2%-6%+4%+5%
SEA64%-4%-29%0%-3%+5%-4%
SF100%-23%+22%+2%-1%-3%-2%
STL100%-14%-12%-3%-1%-5%+1%
TB100%-4%+26%-3%-3%+2%0%
TEX100%+11%+34%-1%+4%-3%+0%
TOR100%+13%+11%+11%+0%+5%-1%
WAS100%-7%-25%0%+3%-7%-6%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+52%+5%+6%-4%-2%
ATL100%-1%-10%-5%+0%+2%+0%
BAL100%+12%-27%-12%+1%-3%+2%
BOS100%-12%-23%+20%+5%-1%-1%
CHC100%+12%-5%-2%+0%+2%+3%
CHW100%+32%-23%-6%+1%+1%+8%
CIN100%+28%-26%+1%-1%+4%+2%
CLE100%-11%-38%+5%-4%+7%-1%
COL100%+9%+32%+1%+17%-15%-3%
DET100%-5%+49%-10%+1%-8%-3%
HOU100%+13%+25%-3%+1%+3%-1%
KC100%-14%+22%+5%+4%-10%+1%
LAA100%-5%-30%-4%0%+0%-4%
LAD100%+6%-55%-4%-5%+5%-3%
MIA100%-24%+66%+1%+4%-8%-1%
MIL100%+12%-13%+3%-2%+4%+5%
MIN100%-10%+8%+3%+4%-6%-1%
NYM100%+29%-41%-2%-5%+8%+7%
NYY100%+16%-38%-10%+2%+2%+2%
OAK100%-3%+2%0%-4%-2%-1%
PHI100%+15%-14%+1%+1%+2%-4%
PIT100%-22%-18%+4%+1%-8%-7%
SD79%-10%+16%-2%-9%+4%+9%
SEA74%-6%-26%+3%-5%+5%-5%
SF100%-22%+11%-1%0%-5%-1%
STL100%-17%-8%-1%-2%-5%0%
TB100%-6%+28%-5%-3%+3%0%
TEX100%+9%+24%+0%+4%-5%+1%
TOR100%+16%+28%+13%+1%+3%+0%
WAS100%-7%-21%-2%+2%-7%-6%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+8%+42%+6%+5%-5%+0%
ATL100%-4%-8%-5%0%+3%+4%
BAL100%+12%-30%-6%-1%-2%-1%
BOS100%-25%+21%+27%+7%-5%+0%
CHC100%-4%-15%+0%+0%+3%+0%
CHW100%+21%-16%-2%0%+6%+8%
CIN100%+25%-31%-4%-1%+4%-2%
CLE100%-1%-32%+1%-1%+0%+1%
COL100%+14%+29%-4%+13%-14%-3%
DET100%-2%+47%-13%+0%-8%-2%
HOU100%+10%+19%-4%+1%-1%+0%
KC100%-15%+13%+5%+5%-9%-3%
LAA100%-11%-29%-1%-1%+3%-5%
LAD100%+8%-44%-5%-3%+2%-1%
MIA77%-28%+44%+2%-1%-4%-3%
MIL100%+18%+2%-2%+0%+5%+3%
MIN100%-20%+42%-5%+2%-4%-1%
NYM88%+7%-18%-1%-9%+5%+6%
NYY100%+24%-43%-11%+3%0%+7%
OAK100%-11%+22%-1%-3%-2%+1%
PHI100%+17%-5%-1%+1%+0%0%
PIT100%-9%-26%+8%+2%-10%-3%
SD59%+9%+0%+4%-4%+5%+3%
SEA77%+3%-40%+4%-4%+5%-4%
SF100%-27%+35%+4%-2%+0%-5%
STL100%-11%-13%-8%-1%-5%+3%
TB100%+1%+30%-3%-3%+3%-2%
TEX100%+18%+34%-4%+4%-2%-2%
TOR100%+8%-10%+11%0%+7%-1%
WAS100%-10%-27%+3%+5%-8%-7%