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 1.00.

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
ARI1.00+5%+52%+7%+5%-4%+0%
ATL1.00-4%-8%-5%+0%+2%+1%
BAL1.00+12%-31%-9%+1%-4%0%
BOS1.00-17%-8%+23%+5%-2%-2%
CHC1.00+6%-9%-1%+0%+3%+2%
CHW1.00+28%-24%-6%+0%+2%+8%
CIN1.00+27%-27%-2%+0%+3%0%
CLE1.00-4%-37%+3%-2%+3%+1%
COL1.00+11%+33%-1%+15%-13%-1%
DET1.00-5%+43%-8%+1%-8%-2%
HOU1.00+11%+24%-2%0%+4%-1%
KC1.00-13%+17%+4%+5%-10%0%
LAA1.00-8%-27%-3%0%0%-4%
LAD1.00+7%-47%-5%-4%+5%-2%
MIA0.91-24%+39%+2%+1%-5%+2%
MIL1.00+15%-1%+1%-2%+4%+5%
MIN1.00-16%+19%+2%+1%-4%0%
NYM0.90+18%-22%-4%-6%+6%+3%
NYY1.00+26%-37%-8%+1%+1%+3%
OAK1.00-3%-3%+0%-4%-2%+1%
PHI1.00+16%-9%-1%+0%+1%-1%
PIT1.00-19%-19%+5%+1%-9%-6%
SD0.55-2%+19%-7%-4%+3%+1%
SEA0.59-1%-31%+2%-2%+4%-4%
SF1.00-23%+31%+1%-1%-2%-3%
STL1.00-15%-12%-4%-2%-4%+0%
TB1.00-4%+25%-2%-3%+2%0%
TEX1.00+9%+27%0%+5%-4%0%
TOR1.00+13%+10%+11%+1%+4%-1%
WAS1.00-7%-21%-1%+3%-6%-6%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00+3%+54%+10%+5%-3%-1%
ATL1.00-6%-4%-3%0%+2%-1%
BAL1.00+11%-29%-12%+2%-5%+0%
BOS1.00-8%-31%+18%+4%+1%-2%
CHC1.00+10%-6%-1%+0%+2%+3%
CHW1.00+33%-29%-8%+1%-1%+7%
CIN1.00+29%-26%0%+1%+2%+3%
CLE1.00-10%-42%+5%-3%+7%-2%
COL1.00+8%+50%+1%+18%-14%-1%
DET1.00-6%+47%-6%+3%-8%-2%
HOU1.00+14%+29%-3%-1%+6%-2%
KC1.00-10%+25%+3%+4%-11%+1%
LAA1.00-6%-29%-5%+0%-2%-4%
LAD1.00+5%-56%-4%-5%+6%-2%
MIA1.00-23%+51%+5%+4%-7%+5%
MIL1.00+15%-7%+3%-2%+4%+6%
MIN1.00-9%+0%+7%+1%-5%-3%
NYM0.92+26%-38%-6%-5%+5%+3%
NYY1.00+18%-30%-5%0%+3%-2%
OAK1.00+3%-22%+1%-5%-2%+0%
PHI1.00+14%-20%-2%0%+3%-3%
PIT1.00-25%-12%+4%+1%-8%-7%
SD0.56-7%+45%-11%-7%+1%+3%
SEA0.45-4%-13%-2%-2%+4%-3%
SF1.00-18%+17%-1%+0%-4%0%
STL1.00-17%-7%-1%-2%-4%0%
TB1.00-7%+19%-3%-3%+2%+1%
TEX1.00+4%+24%+2%+6%-6%+1%
TOR1.00+15%+35%+11%+1%+2%-1%
WAS1.00-3%-29%-4%+2%-5%-5%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00+0%+48%+9%+4%-3%+1%
ATL1.00-8%-7%-3%+0%+4%+1%
BAL1.00+13%-37%-4%+0%-3%-1%
BOS1.00-27%+15%+25%+6%-5%-2%
CHC1.00-5%-15%0%+1%+3%+3%
CHW1.00+21%-19%-3%-2%+5%+8%
CIN1.00+24%-30%-7%+2%+2%-2%
CLE1.00+4%-35%+2%+1%-2%+5%
COL1.00+16%+28%-7%+14%-12%-1%
DET1.00-2%+38%-11%+1%-8%-2%
HOU1.00+7%+21%-3%-1%+1%-1%
KC1.00-12%+12%+4%+5%-9%-4%
LAA1.00-11%-22%+2%-2%+2%-5%
LAD1.00+9%-39%-8%-3%+2%0%
MIA0.60-22%+29%+1%-3%-3%0%
MIL1.00+14%+21%-2%0%+4%+4%
MIN1.00-24%+46%-1%-1%-2%-1%
NYM0.70+7%+2%-1%-6%+5%+1%
NYY1.00+35%-34%-6%+0%0%+7%
OAK1.00-8%+9%+1%-4%-2%+3%
PHI1.00+20%+1%-2%0%+1%0%
PIT1.00-9%-19%+8%+2%-11%-4%
SD0.35+5%+2%-4%-1%+4%-1%
SEA0.50+1%-28%+0%0%+2%-5%
SF1.00-27%+58%+9%-3%+4%-7%
STL1.00-9%-23%-9%-1%-5%+3%
TB1.00-1%+22%+1%-3%+2%+0%
TEX1.00+14%+39%-3%+4%-1%-1%
TOR1.00+8%-15%+8%-1%+6%-3%
WAS1.00-10%-21%+3%+4%-8%-6%