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%+51%+7%+5%-4%0%
ATL61%-6%-18%0%-1%-1%-2%
BAL100%+11%-31%-10%+1%-4%+0%
BOS100%-17%-3%+21%+6%-3%-2%
CHC100%+5%-6%-2%+1%+1%+2%
CHW100%+25%-18%-6%-1%+4%+7%
CIN100%+25%-25%0%-1%+5%+2%
CLE100%-6%-35%+5%-1%+3%+1%
COL100%+9%+40%0%+17%-14%-2%
DET100%-2%+47%-8%+1%-7%-2%
HOU100%+11%+23%-3%-1%+4%-1%
KC100%-15%+22%+6%+4%-9%-1%
LAA100%-4%-27%-4%-1%+2%-4%
LAD100%+7%-52%-3%-5%+4%-4%
MIA100%-22%+28%-2%-3%-2%0%
MIL100%+14%-2%+1%-1%+4%+4%
MIN100%-7%+6%+1%+2%-5%-1%
NYM100%+11%-27%-5%-8%+7%+2%
NYY100%+24%-39%-11%+1%+2%+5%
OAK100%-8%+6%+2%-4%-2%-1%
PHI100%+19%-14%-1%+0%+3%-2%
PIT100%-18%-15%+4%+1%-8%-4%
SD100%-5%-8%-1%-5%+2%+7%
SEA100%+1%-29%-5%-5%+9%-1%
SF100%-25%+29%+1%-1%-3%-2%
STL100%-14%-15%-3%-1%-5%-1%
TB100%-4%+24%-4%-3%+4%+0%
TEX100%+9%+33%-1%+5%-5%+2%
TOR100%+9%+9%+12%+0%+3%-1%
WAS100%-2%-28%+1%+4%-6%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+54%+5%+6%-3%-1%
ATL75%-11%-24%-1%+0%-2%-4%
BAL100%+11%-26%-12%+1%-3%+1%
BOS100%-11%-20%+19%+5%-1%-2%
CHC100%+12%-1%-4%+0%+1%+3%
CHW100%+28%-23%-7%+0%+3%+7%
CIN100%+27%-21%+3%-1%+5%+3%
CLE100%-11%-38%+6%-2%+6%0%
COL100%+7%+36%+2%+17%-14%-2%
DET100%-2%+47%-7%+1%-7%-3%
HOU100%+11%+23%-3%-1%+4%-1%
KC100%-14%+25%+7%+4%-9%+0%
LAA100%-2%-28%-5%-1%+1%-3%
LAD100%+6%-55%-2%-5%+4%-4%
MIA100%-24%+24%+1%-1%-3%-3%
MIL100%+12%-9%+5%-2%+4%+4%
MIN100%-5%-3%+3%+4%-6%-1%
NYM100%+15%-32%-8%-8%+8%+2%
NYY100%+19%-32%-13%+1%+2%+4%
OAK100%-6%+3%+1%-4%-3%-2%
PHI100%+20%-13%0%+0%+4%-3%
PIT100%-21%-16%+2%+1%-8%-6%
SD100%-6%+2%-4%-6%+3%+11%
SEA100%+1%-18%-6%-6%+10%0%
SF100%-23%+13%-1%+0%-5%-1%
STL100%-16%-9%-1%-1%-6%-2%
TB100%-7%+23%-5%-3%+5%0%
TEX100%+6%+27%+1%+5%-6%+2%
TOR100%+12%+22%+13%+1%+2%0%
WAS100%-1%-25%-2%+4%-5%-3%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+46%+6%+6%-5%+0%
ATL65%-6%-9%-2%-3%+0%0%
BAL100%+10%-32%-7%0%-4%-2%
BOS100%-26%+18%+28%+7%-5%0%
CHC100%-4%-10%-1%+0%+3%+1%
CHW100%+21%-8%-4%-2%+6%+7%
CIN100%+24%-23%-5%0%+6%+0%
CLE100%0%-34%+4%+1%-2%+1%
COL100%+12%+38%-3%+14%-14%-1%
DET100%-1%+43%-11%-1%-7%-2%
HOU100%+10%+23%-3%0%+3%-1%
KC100%-17%+18%+5%+5%-9%-2%
LAA100%-7%-29%-3%-2%+4%-5%
LAD100%+11%-46%-4%-4%+2%-4%
MIA100%-19%+37%-9%-4%0%+1%
MIL100%+20%+3%-2%+0%+4%+3%
MIN100%-13%+25%-5%+2%-4%+0%
NYM100%+7%-24%-1%-9%+5%+3%
NYY100%+32%-44%-10%+2%0%+9%
OAK100%-13%+18%+0%-3%-2%-1%
PHI100%+19%-9%0%+1%+2%+1%
PIT100%-8%-23%+6%+1%-8%-3%
SD100%-8%-22%+8%-3%+1%+6%
SEA100%+3%-38%-1%-5%+9%-3%
SF100%-30%+40%+5%-2%0%-5%
STL100%-9%-16%-6%-1%-5%-1%
TB100%+1%+31%-5%-3%+4%-1%
TEX100%+14%+35%-4%+5%-3%+1%
TOR100%+5%-8%+12%0%+5%-2%
WAS100%-6%-29%+4%+4%-7%-5%