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+3%+81%+6%+9%-8%+8%
ATL1.00-4%+20%-5%+4%-3%+7%
BAL1.00+18%-23%-9%+4%-7%+6%
BOS1.00-16%+8%+22%+9%-5%+5%
CHC1.00+8%+2%-3%+4%-3%+9%
CHW1.00+41%-20%-8%+2%-6%+15%
CIN1.00+28%-16%-5%+3%-1%+6%
CLE1.00+3%-34%+2%0%-1%+8%
COL1.00+12%+69%0%+24%-21%+10%
DET1.00-1%+55%-11%+5%-13%+2%
HOU1.00+15%+73%-2%+5%-4%+9%
KC1.00-13%+26%+2%+7%-16%+9%
LAA1.00-7%-11%-6%+2%-6%+1%
LAD1.00+9%-34%-6%-1%-1%+5%
MIA0.33-11%+21%0%+1%-2%+7%
MIL1.00+16%+19%+3%+1%-1%+13%
MIN0.72-15%+28%+1%+5%-6%+5%
NYM0.34+1%-2%-4%-3%+3%+3%
NYY0.90+23%-38%-8%+4%-2%+10%
OAK1.00+3%+17%-1%-1%-6%+8%
PHI1.00+14%+9%-1%+3%-5%+7%
PIT1.00-12%-3%+6%+6%-14%-2%
SD0.17-1%+19%+0%-1%+0%+2%
SEA0.18-2%-8%+2%+0%-1%0%
SF1.00-21%+52%+2%+2%-9%+7%
STL1.00-18%+17%-5%+4%-10%+5%
TB1.00-2%+40%-3%+1%-4%+10%
TEX1.00+16%+38%-3%+9%-8%+11%
TOR1.00+18%+23%+10%+3%-3%+7%
WAS1.00-6%+9%-8%+6%-12%+5%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00+3%+65%+10%+9%-9%+4%
ATL1.00-7%+22%-5%+4%-3%+3%
BAL1.00+15%-16%-12%+6%-10%+10%
BOS1.00-7%-33%+22%+7%-2%+7%
CHC1.00+14%+14%-5%+4%-3%+6%
CHW1.00+46%-15%-9%+3%-8%+13%
CIN1.00+36%-11%-2%+4%-2%+11%
CLE1.000%-43%+6%-2%+3%+3%
COL1.00+8%+96%+0%+26%-21%+10%
DET1.00-5%+63%-6%+7%-15%+4%
HOU1.00+19%+62%-3%+6%-3%+12%
KC1.00-7%+22%+3%+5%-17%+13%
LAA1.00-4%-10%-4%+3%-10%+0%
LAD1.00+8%-46%-7%-3%+1%+4%
MIA0.41-13%+42%+3%+1%-3%+11%
MIL1.00+19%+7%+5%+2%-1%+13%
MIN0.59-2%+3%+1%+3%-6%+6%
NYM0.33+1%-9%-3%-4%+1%+6%
NYY0.67+13%-11%+2%+1%+0%+10%
OAK1.00+10%-21%+3%-2%-6%+6%
PHI1.00+16%-2%-1%+4%-4%+6%
PIT1.00-21%-5%+2%+4%-13%-3%
SD0.18-2%+114%-4%-2%0%0%
SEA0.11-1%0%0%+0%0%+0%
SF1.00-17%+28%-3%+3%-11%+9%
STL1.00-20%+13%0%+4%-11%+8%
TB1.00-4%+48%+1%+2%-4%+12%
TEX1.00+14%+44%+2%+11%-10%+13%
TOR1.00+22%+58%+12%+4%-6%+8%
WAS1.00-9%+8%-8%+6%-14%+7%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00-6%+94%+6%+8%-8%+12%
ATL1.00-10%+31%+2%+3%-4%+7%
BAL1.00+26%-23%-4%+3%-6%+6%
BOS1.00-21%+34%+19%+11%-8%+6%
CHC1.00-11%-8%+1%+5%-2%+13%
CHW1.00+29%-31%-4%+1%-1%+13%
CIN1.00+19%-12%-9%+2%-2%+2%
CLE1.00+6%-29%-1%+4%-5%+14%
COL1.00+17%+76%-1%+21%-20%+10%
DET1.00+3%+41%-19%+5%-13%+2%
HOU0.72+14%+55%+4%-1%-4%+4%
KC1.00-17%+35%+2%+10%-14%+4%
LAA1.00-6%-2%-1%+0%-2%+5%
LAD1.00+10%-30%-6%+2%-2%+3%
MIA0.19-8%+8%-2%-1%-2%0%
MIL1.00+9%+54%-3%0%0%+15%
MIN0.60-23%+42%-1%+3%-5%+1%
NYM0.30+0%+19%-5%-3%+5%+1%
NYY0.69+23%-35%-8%+4%-4%+10%
OAK1.00-4%+65%-4%+1%-5%+10%
PHI1.00+16%+28%0%+1%-3%+3%
PIT1.00+2%+16%+19%+7%-15%0%
SD0.09+4%+0%+4%+0%0%+5%
SEA0.16-2%-10%-1%0%-1%-1%
SF1.00-25%+112%+17%+1%-2%+3%
STL0.78-10%+14%-7%+3%-4%+1%
TB1.00-3%+29%-1%+2%-4%+8%
TEX1.00+14%+53%-11%+8%-4%+11%
TOR1.00+9%-13%+7%+2%+1%+4%
WAS0.62-3%+11%-3%+4%-6%+0%