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%+22%+6%-2%-1%
CHC1.00+6%-8%0%+0%+3%+2%
CHW1.00+28%-24%-5%+0%+2%+8%
CIN1.00+27%-26%-2%0%+3%0%
CLE1.00-4%-37%+3%-2%+3%+1%
COL1.00+11%+33%-1%+16%-14%-1%
DET1.00-5%+44%-9%+1%-8%-2%
HOU1.00+11%+23%-2%+0%+3%-1%
KC1.00-13%+17%+4%+5%-10%0%
LAA1.00-8%-26%-3%0%0%-4%
LAD1.00+8%-47%-5%-4%+4%-2%
MIA0.98-26%+49%+2%+1%-6%+2%
MIL1.00+15%-2%+1%-2%+4%+5%
MIN1.00-15%+18%+1%+1%-4%-1%
NYM0.98+18%-28%-5%-7%+6%+3%
NYY1.00+24%-39%-8%+1%+2%+3%
OAK1.00-3%-3%+0%-4%-2%+1%
PHI1.00+16%-10%-1%+0%+2%-1%
PIT1.00-19%-19%+5%+1%-9%-6%
SD0.630%+12%-6%-5%+3%+2%
SEA0.66+2%-33%-1%-2%+3%-5%
SF1.00-23%+33%+1%-1%-2%-3%
STL1.00-15%-11%-3%-2%-4%+1%
TB1.00-4%+23%-2%-3%+2%0%
TEX1.00+9%+28%0%+4%-4%0%
TOR1.00+13%+10%+11%+0%+4%-1%
WAS1.00-9%-21%-1%+3%-7%-6%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00+3%+54%+10%+5%-3%-1%
ATL1.00-5%-6%-4%0%+2%-1%
BAL1.00+11%-29%-12%+2%-5%+0%
BOS1.00-8%-30%+17%+5%+1%-2%
CHC1.00+10%-5%-1%+0%+2%+3%
CHW1.00+32%-29%-7%+1%-1%+7%
CIN1.00+28%-26%0%+0%+3%+3%
CLE1.00-10%-41%+5%-3%+7%-2%
COL1.00+8%+49%+1%+18%-14%-1%
DET1.00-6%+49%-6%+3%-8%-2%
HOU1.00+14%+28%-3%0%+6%-2%
KC1.00-10%+24%+3%+4%-10%+1%
LAA1.00-5%-29%-5%+0%-2%-4%
LAD1.00+6%-57%-4%-5%+6%-2%
MIA1.00-21%+58%+6%+2%-6%+7%
MIL1.00+14%-8%+2%-2%+3%+6%
MIN1.00-8%-3%+7%+1%-6%-3%
NYM1.00+23%-42%-7%-5%+5%+3%
NYY1.00+17%-32%-6%-1%+4%-2%
OAK1.00+2%-23%+1%-5%-1%+0%
PHI1.00+14%-20%-2%0%+3%-3%
PIT1.00-25%-13%+4%+1%-8%-8%
SD0.63-6%+36%-11%-7%+2%+5%
SEA0.51-2%-15%-6%-2%+4%-4%
SF1.00-18%+21%-2%0%-4%+0%
STL1.00-17%-7%+0%-2%-4%+0%
TB1.00-7%+18%-2%-3%+2%+1%
TEX1.00+4%+24%+2%+6%-6%+1%
TOR1.00+15%+35%+11%+1%+3%-1%
WAS1.00-5%-28%-4%+2%-6%-5%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI1.00+1%+47%+9%+4%-4%+1%
ATL1.00-7%-6%-4%0%+4%+1%
BAL1.00+14%-36%-4%+0%-3%-1%
BOS1.00-27%+16%+25%+7%-5%-1%
CHC1.00-5%-14%+0%+1%+4%+1%
CHW1.00+20%-17%-1%-2%+5%+8%
CIN1.00+24%-28%-8%+1%+3%-2%
CLE1.00+5%-35%+2%+1%-2%+5%
COL1.00+16%+29%-6%+14%-13%0%
DET1.00-1%+40%-12%+1%-8%-2%
HOU1.00+8%+21%-2%-1%+1%-1%
KC1.00-13%+12%+4%+5%-8%-4%
LAA1.00-11%-22%+2%-3%+2%-5%
LAD1.00+10%-38%-8%-3%+3%0%
MIA0.64-25%+33%0%-3%-4%0%
MIL1.00+14%+19%-3%+0%+4%+4%
MIN1.00-24%+44%-2%-1%-2%-1%
NYM0.77+8%-6%0%-8%+5%+1%
NYY1.00+32%-38%-6%+1%0%+7%
OAK1.00-8%+9%+1%-4%-2%+4%
PHI1.00+20%0%-2%0%+2%-1%
PIT1.00-9%-19%+8%+2%-11%-4%
SD0.41+7%-1%-5%-1%+5%-3%
SEA0.57+5%-30%0%-1%+2%-6%
SF1.00-27%+58%+9%-3%+4%-7%
STL1.00-10%-20%-7%0%-6%+4%
TB1.00-1%+19%+1%-3%+2%+1%
TEX1.00+14%+42%-3%+4%-1%-2%
TOR1.00+8%-14%+8%-1%+6%-3%
WAS1.00-12%-22%+3%+5%-8%-6%