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%+49%+7%+5%-4%-1%
ATL100%-5%-6%-4%0%+3%+1%
BAL100%+12%-30%-10%+1%-3%0%
BOS100%-17%-4%+22%+6%-2%-1%
CHC100%+6%-9%-2%+0%+2%+2%
CHW100%+28%-21%-5%0%+3%+8%
CIN100%+25%-30%-2%0%+4%+1%
CLE100%-6%-34%+4%-2%+3%+1%
COL100%+10%+37%-2%+16%-14%-2%
DET100%-5%+48%-9%+1%-8%-2%
HOU100%+13%+25%-3%+1%+3%-1%
KC100%-14%+19%+5%+5%-9%-1%
LAA100%-6%-28%-4%-1%+2%-4%
LAD100%+7%-50%-4%-4%+4%-2%
MIA100%-29%+50%+4%+0%-5%0%
MIL100%+15%-3%+0%-1%+4%+5%
MIN100%-11%+11%+0%+2%-6%-3%
NYM100%+20%-29%-2%-7%+6%+4%
NYY100%+22%-38%-9%+1%+2%+5%
OAK100%-7%+5%0%-4%-2%+0%
PHI100%+16%-17%+0%+1%+1%-2%
PIT100%-18%-17%+4%+1%-9%-6%
SD82%+4%0%-5%-6%+6%+4%
SEA91%-5%-35%-1%-4%+7%-4%
SF100%-24%+24%+1%-1%-2%-2%
STL100%-15%-13%-3%-1%-6%+1%
TB100%-3%+24%-3%-3%+3%0%
TEX100%+10%+34%-1%+4%-4%+1%
TOR100%+13%+10%+11%+0%+4%-1%
WAS100%-6%-27%0%+3%-7%-6%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+52%+6%+5%-4%-2%
ATL100%-2%-8%-4%+0%+2%+1%
BAL100%+12%-26%-12%+1%-3%+1%
BOS100%-11%-24%+20%+5%-1%-1%
CHC100%+12%-4%-3%+0%+2%+2%
CHW100%+31%-25%-7%+1%+2%+9%
CIN100%+27%-27%+1%-1%+5%+2%
CLE100%-11%-37%+5%-3%+6%-1%
COL100%+7%+36%+1%+17%-14%-3%
DET100%-5%+52%-8%+1%-7%-3%
HOU100%+13%+27%-3%+1%+4%-1%
KC100%-15%+22%+6%+4%-10%+0%
LAA100%-5%-29%-5%0%+1%-4%
LAD100%+6%-54%-2%-5%+5%-3%
MIA100%-24%+53%+1%+2%-7%-3%
MIL100%+13%-11%+3%-2%+4%+5%
MIN100%-6%+0%+2%+4%-7%-3%
NYM100%+23%-36%-5%-6%+7%+6%
NYY100%+15%-34%-10%+0%+3%+3%
OAK100%-4%+1%-1%-4%-3%-1%
PHI100%+16%-18%+1%+1%+2%-4%
PIT100%-21%-17%+2%+1%-8%-6%
SD100%-5%+5%-6%-7%+5%+11%
SEA100%-8%-36%+2%-7%+9%-4%
SF100%-22%+12%-1%0%-5%-1%
STL100%-18%-10%-1%-2%-5%-1%
TB100%-6%+27%-5%-3%+3%0%
TEX100%+8%+26%0%+4%-5%+2%
TOR100%+16%+23%+13%+1%+2%+0%
WAS100%-6%-24%-1%+2%-6%-5%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+42%+6%+5%-5%+0%
ATL100%-5%-8%-4%0%+4%+4%
BAL100%+12%-32%-6%0%-3%-2%
BOS100%-26%+22%+27%+7%-4%+0%
CHC100%-2%-14%-1%+0%+4%+0%
CHW100%+20%-14%-2%-1%+6%+8%
CIN100%+24%-32%-4%-1%+4%-1%
CLE100%-2%-31%+2%-1%0%+1%
COL100%+13%+31%-5%+13%-14%-2%
DET100%-4%+44%-13%+0%-7%-2%
HOU100%+12%+19%-2%+1%+0%0%
KC100%-15%+16%+6%+5%-9%-2%
LAA100%-10%-30%-3%-1%+3%-4%
LAD100%+9%-44%-5%-3%+2%-1%
MIA99%-37%+39%+4%+1%-2%+2%
MIL100%+19%+3%-3%+0%+4%+3%
MIN100%-18%+27%-6%+2%-4%-3%
NYM100%+19%-25%+3%-9%+4%+4%
NYY100%+28%-42%-9%+3%0%+8%
OAK100%-12%+20%-1%-3%-3%+0%
PHI100%+15%-11%+0%+1%-1%+1%
PIT100%-8%-24%+7%+1%-9%-3%
SD80%+11%-4%+2%-5%+7%+2%
SEA100%+0%-40%+0%-3%+6%-5%
SF100%-29%+38%+4%-2%+0%-5%
STL100%-12%-10%-7%-1%-6%+3%
TB100%+2%+28%-4%-2%+3%-2%
TEX100%+16%+33%-4%+4%-3%-1%
TOR100%+8%-7%+11%-1%+6%-1%
WAS100%-8%-23%+2%+3%-8%-7%