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%+2%
BAL100%+11%-29%-10%+1%-3%+0%
BOS100%-17%-3%+21%+6%-2%-1%
CHC100%+6%-8%-2%+0%+2%+2%
CHW100%+27%-18%-5%0%+3%+8%
CIN100%+24%-29%-1%0%+4%+1%
CLE100%-5%-36%+5%-1%+3%+1%
COL100%+10%+37%-1%+16%-14%-2%
DET100%-3%+50%-9%+1%-7%-2%
HOU100%+12%+24%-3%0%+4%-1%
KC100%-15%+21%+6%+4%-9%-2%
LAA100%-5%-27%-4%-1%+1%-4%
LAD100%+7%-50%-3%-5%+4%-3%
MIA100%-23%+30%+3%-2%-3%+0%
MIL100%+15%-2%+1%-1%+4%+4%
MIN100%-8%+8%0%+2%-6%-2%
NYM100%+13%-31%-1%-8%+7%+6%
NYY100%+27%-41%-9%+1%+2%+4%
OAK100%-8%+6%+0%-4%-2%-1%
PHI100%+17%-14%-1%+1%+3%-2%
PIT100%-18%-14%+4%+1%-9%-5%
SD100%+1%-6%-4%-5%+4%+4%
SEA100%+1%-39%-4%-5%+8%-2%
SF100%-25%+27%+1%-1%-3%-2%
STL100%-14%-15%-3%-1%-6%0%
TB100%-4%+25%-4%-3%+4%+0%
TEX100%+8%+32%-1%+5%-4%+1%
TOR100%+10%+10%+12%+1%+3%-1%
WAS100%-4%-27%-1%+2%-7%-5%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+8%+53%+6%+6%-3%-2%
ATL100%-4%-8%-4%0%+2%+1%
BAL100%+11%-25%-12%+1%-3%+1%
BOS100%-11%-23%+20%+5%-1%-2%
CHC100%+12%-2%-3%0%+1%+3%
CHW100%+29%-23%-7%+0%+2%+9%
CIN100%+27%-25%+2%-1%+4%+2%
CLE100%-10%-40%+6%-2%+6%0%
COL100%+7%+34%+1%+17%-14%-3%
DET100%-3%+53%-9%+0%-7%-3%
HOU100%+11%+26%-3%0%+4%-1%
KC100%-15%+23%+7%+4%-9%0%
LAA100%-3%-28%-5%0%+1%-3%
LAD100%+6%-55%-2%-5%+4%-4%
MIA100%-21%+41%+5%-1%-3%-4%
MIL100%+12%-9%+4%-2%+4%+5%
MIN100%-5%+0%+1%+4%-6%-2%
NYM100%+16%-39%-5%-7%+8%+8%
NYY100%+22%-37%-11%+1%+3%+3%
OAK100%-5%+3%-1%-4%-3%-2%
PHI100%+17%-14%0%+1%+3%-4%
PIT100%-22%-15%+2%+1%-9%-6%
SD100%-4%+12%-7%-7%+3%+10%
SEA100%-1%-35%-3%-7%+11%-3%
SF100%-23%+11%-1%+0%-5%-1%
STL100%-17%-11%-1%-1%-6%-1%
TB100%-7%+26%-5%-3%+4%+0%
TEX100%+6%+25%+0%+5%-6%+2%
TOR100%+12%+24%+14%+1%+1%+0%
WAS100%-4%-25%-3%+3%-6%-5%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+41%+6%+6%-5%+0%
ATL100%-6%-10%-5%0%+3%+4%
BAL100%+10%-31%-6%0%-3%-1%
BOS100%-26%+24%+27%+7%-5%+0%
CHC100%-4%-13%-2%+0%+3%+1%
CHW100%+22%-9%-3%-2%+7%+8%
CIN100%+22%-29%-4%0%+4%-1%
CLE100%+0%-34%+3%+1%-1%+1%
COL100%+11%+35%-4%+14%-15%-2%
DET100%-1%+48%-11%-1%-7%-2%
HOU100%+12%+20%-2%+0%+2%-1%
KC100%-18%+17%+5%+5%-9%-3%
LAA100%-10%-27%-3%-1%+3%-4%
LAD100%+10%-43%-5%-4%+3%-3%
MIA100%-26%+19%-6%-1%-2%+3%
MIL100%+21%+6%-1%+0%+4%+2%
MIN100%-17%+17%-6%+3%-5%+0%
NYM100%+12%-24%+4%-8%+5%+6%
NYY100%+32%-43%-8%+1%+0%+7%
OAK100%-13%+20%-1%-3%-3%0%
PHI100%+17%-10%+0%+1%+0%+1%
PIT100%-7%-21%+7%+1%-8%-2%
SD100%+2%-23%+7%-5%+5%+1%
SEA100%+6%-43%-2%-5%+7%-2%
SF100%-30%+40%+3%-2%0%-5%
STL100%-8%-13%-7%-1%-5%+0%
TB100%+2%+28%-4%-3%+4%-1%
TEX100%+14%+32%-4%+4%-2%-1%
TOR100%+6%-9%+12%0%+5%-2%
WAS100%-8%-26%+3%+2%-7%-6%