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%+8%+5%-3%-1%
ATL100%-6%-9%-4%0%+2%+1%
BAL100%+11%-30%-10%+1%-3%+0%
BOS100%-17%-4%+21%+6%-3%-1%
CHC100%+6%-7%-2%+0%+2%+3%
CHW100%+27%-18%-5%-1%+4%+8%
CIN100%+24%-28%-1%-1%+4%+1%
CLE100%-6%-36%+5%-1%+3%+1%
COL100%+9%+38%-1%+16%-14%-2%
DET100%-2%+49%-9%+1%-7%-2%
HOU100%+11%+23%-3%0%+4%-2%
KC100%-15%+21%+6%+4%-9%-2%
LAA100%-5%-27%-5%-1%+2%-4%
LAD100%+6%-51%-3%-4%+4%-3%
MIA100%-21%+31%-1%-2%-2%+0%
MIL100%+15%-2%+1%-1%+4%+4%
MIN100%-7%+8%+0%+2%-5%-2%
NYM100%+12%-30%-1%-8%+6%+5%
NYY100%+27%-39%-10%+0%+2%+4%
OAK100%-7%+8%+0%-4%-2%0%
PHI100%+19%-14%-1%+0%+3%-2%
PIT100%-18%-15%+4%+1%-8%-5%
SD100%-3%-6%-3%-5%+4%+4%
SEA100%+1%-34%-3%-4%+8%-1%
SF100%-25%+28%+1%-1%-2%-2%
STL100%-14%-15%-3%-1%-6%0%
TB100%-4%+25%-4%-3%+4%+0%
TEX100%+8%+30%-1%+5%-4%+2%
TOR100%+9%+10%+12%+1%+3%-1%
WAS100%-4%-27%0%+3%-7%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+51%+6%+6%-3%-2%
ATL100%-4%-11%-4%0%+2%+1%
BAL100%+11%-26%-12%+1%-3%+1%
BOS100%-12%-22%+19%+6%-1%-2%
CHC100%+12%-1%-3%0%+1%+3%
CHW100%+30%-22%-6%+0%+2%+9%
CIN100%+26%-23%+2%-1%+5%+2%
CLE100%-11%-40%+6%-2%+6%0%
COL100%+7%+35%+1%+17%-14%-3%
DET100%-2%+49%-9%+1%-7%-3%
HOU100%+11%+24%-2%0%+4%-1%
KC100%-15%+24%+8%+4%-9%+0%
LAA100%-3%-29%-5%-1%+1%-4%
LAD100%+6%-55%-2%-5%+4%-4%
MIA100%-21%+31%+2%-1%-3%-2%
MIL100%+12%-9%+4%-2%+4%+5%
MIN100%-4%+3%+1%+4%-6%-2%
NYM100%+16%-39%-5%-8%+7%+6%
NYY100%+22%-34%-12%+1%+3%+3%
OAK100%-5%+5%0%-4%-3%-2%
PHI100%+19%-13%-1%+0%+3%-4%
PIT100%-21%-15%+2%+1%-8%-6%
SD100%-6%+13%-5%-6%+4%+8%
SEA100%-1%-30%-3%-7%+9%0%
SF100%-23%+13%-1%+0%-5%-1%
STL100%-16%-11%-2%-1%-6%-1%
TB100%-7%+27%-5%-3%+5%+0%
TEX100%+6%+24%+1%+5%-6%+2%
TOR100%+12%+22%+14%+1%+1%0%
WAS100%-4%-23%-2%+4%-6%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+41%+7%+6%-4%0%
ATL100%-6%-11%-5%0%+3%+3%
BAL100%+11%-32%-7%0%-3%-1%
BOS100%-26%+22%+28%+7%-5%+1%
CHC100%-3%-11%-1%+0%+3%+1%
CHW100%+22%-9%-3%-2%+6%+8%
CIN100%+23%-28%-5%-1%+4%0%
CLE100%0%-34%+3%+1%-2%+1%
COL100%+12%+36%-4%+14%-15%-1%
DET100%0%+45%-11%0%-7%-2%
HOU100%+11%+20%-3%0%+2%-1%
KC100%-16%+18%+5%+5%-9%-3%
LAA100%-9%-28%-3%-1%+3%-5%
LAD100%+10%-44%-4%-3%+2%-3%
MIA100%-22%+31%-9%-2%-1%+2%
MIL100%+20%+5%-2%+0%+4%+2%
MIN100%-16%+20%-5%+2%-5%-1%
NYM100%+11%-20%+3%-8%+5%+5%
NYY100%+33%-43%-9%+1%+0%+7%
OAK100%-12%+20%-1%-3%-2%0%
PHI100%+19%-9%0%+0%+1%+1%
PIT100%-9%-22%+6%+1%-8%-2%
SD100%-4%-26%+7%-6%+6%+2%
SEA100%+6%-38%0%-4%+7%-2%
SF100%-31%+41%+4%-2%0%-5%
STL100%-9%-15%-6%0%-5%0%
TB100%+1%+29%-4%-3%+4%-1%
TEX100%+13%+32%-4%+4%-3%+0%
TOR100%+5%-8%+12%0%+5%-2%
WAS100%-7%-29%+4%+3%-7%-6%