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%+51%+7%+5%-3%0%
ATL80%-3%-25%+3%+1%-1%0%
BAL100%+12%-29%-10%+1%-4%0%
BOS100%-17%-4%+22%+6%-3%-1%
CHC100%+5%-5%-2%+0%+2%+2%
CHW100%+26%-19%-7%-1%+4%+7%
CIN100%+25%-26%0%-1%+5%+2%
CLE100%-5%-36%+5%-1%+3%+1%
COL100%+9%+41%-1%+17%-14%-1%
DET100%-2%+50%-8%+1%-8%-2%
HOU100%+10%+20%-3%-1%+4%-1%
KC100%-15%+23%+7%+4%-9%-2%
LAA100%-3%-27%-4%-1%+2%-4%
LAD100%+8%-52%-3%-5%+4%-4%
MIA100%-22%+32%-1%-3%-2%-1%
MIL100%+15%-3%+2%-2%+4%+4%
MIN100%-9%+9%+2%+2%-4%-1%
NYM100%+8%-29%-5%-8%+7%+2%
NYY100%+22%-38%-11%+0%+2%+4%
OAK100%-8%+5%+2%-4%-2%-1%
PHI100%+19%-14%-2%+0%+3%-2%
PIT100%-17%-14%+5%+1%-8%-4%
SD100%-2%-10%-2%-5%+2%+6%
SEA100%0%-32%-6%-5%+9%-1%
SF100%-26%+30%+0%-1%-2%-2%
STL100%-14%-16%-2%-1%-6%-1%
TB100%-4%+24%-4%-3%+4%+0%
TEX100%+9%+33%-1%+5%-5%+2%
TOR100%+10%+9%+12%+0%+3%-1%
WAS100%-1%-28%+1%+4%-6%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+53%+5%+5%-3%-1%
ATL100%-8%-28%+2%+3%-2%-1%
BAL100%+12%-26%-12%+1%-4%+1%
BOS100%-12%-20%+19%+5%-1%-1%
CHC100%+11%-2%-3%0%+1%+3%
CHW100%+28%-24%-7%+0%+3%+7%
CIN100%+26%-21%+3%-1%+5%+4%
CLE100%-10%-39%+6%-2%+6%0%
COL100%+6%+38%+1%+17%-14%-2%
DET100%-2%+51%-8%+1%-7%-4%
HOU100%+10%+20%-3%-1%+4%-1%
KC100%-15%+27%+7%+3%-9%0%
LAA100%-1%-28%-4%-1%+1%-3%
LAD100%+7%-54%-2%-4%+5%-5%
MIA100%-24%+31%+2%-1%-3%-3%
MIL100%+12%-8%+5%-2%+5%+4%
MIN100%-8%+1%+3%+3%-5%-1%
NYM100%+12%-35%-7%-9%+8%+3%
NYY100%+16%-30%-13%+1%+2%+2%
OAK100%-6%+1%+1%-4%-3%-1%
PHI100%+19%-13%-2%+0%+3%-3%
PIT100%-20%-16%+2%+1%-8%-6%
SD100%-2%-5%-5%-6%+2%+10%
SEA100%+1%-23%-7%-6%+10%+0%
SF100%-23%+14%-2%+0%-5%-2%
STL100%-16%-10%-1%-1%-6%-2%
TB100%-7%+22%-4%-3%+5%0%
TEX100%+6%+28%+1%+5%-5%+2%
TOR100%+13%+22%+13%+0%+2%0%
WAS100%0%-25%-2%+4%-6%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+47%+6%+5%-5%+0%
ATL82%-2%-16%+3%-1%+0%+2%
BAL100%+10%-29%-6%0%-4%-2%
BOS100%-26%+17%+29%+7%-5%+1%
CHC100%-5%-8%-1%+0%+3%+1%
CHW100%+22%-8%-5%-2%+6%+7%
CIN100%+24%-24%-5%-1%+6%+0%
CLE100%+0%-35%+4%+1%-2%+0%
COL100%+12%+37%-4%+15%-14%-1%
DET100%-1%+47%-11%-1%-7%-2%
HOU100%+10%+21%-4%0%+3%-1%
KC100%-18%+17%+5%+5%-9%-3%
LAA100%-6%-29%-4%-2%+3%-4%
LAD100%+11%-48%-5%-4%+2%-4%
MIA100%-19%+40%-8%-5%0%0%
MIL100%+21%+0%-2%+0%+5%+3%
MIN100%-13%+25%-4%+2%-3%+1%
NYM100%+5%-23%-3%-8%+5%+2%
NYY100%+30%-44%-10%+1%+1%+7%
OAK100%-14%+15%+1%-4%-1%-1%
PHI100%+19%-10%+0%+0%+2%+2%
PIT100%-8%-21%+7%+1%-8%-2%
SD100%-6%-20%+7%-4%+2%+3%
SEA100%+0%-39%-2%-5%+8%-2%
SF100%-31%+42%+4%-2%0%-4%
STL100%-10%-18%-6%-1%-5%-1%
TB100%+1%+32%-5%-3%+4%-1%
TEX100%+15%+34%-4%+5%-4%+1%
TOR100%+6%-9%+12%0%+5%-3%
WAS100%-4%-27%+5%+5%-7%-5%