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%+3%+52%+7%+5%-3%0%
ATL86%-5%-25%+3%+1%-1%0%
BAL100%+12%-28%-10%+1%-4%0%
BOS100%-17%-3%+22%+6%-2%-1%
CHC100%+4%-4%-3%+1%+1%+2%
CHW100%+25%-20%-6%-1%+4%+7%
CIN100%+24%-27%-1%-1%+5%+2%
CLE100%-5%-36%+5%-1%+3%+1%
COL100%+9%+41%-1%+17%-14%-2%
DET100%-2%+50%-9%+1%-8%-3%
HOU100%+10%+21%-3%-1%+4%-1%
KC100%-15%+22%+7%+4%-9%-2%
LAA100%-3%-27%-4%-1%+2%-4%
LAD100%+7%-52%-3%-5%+4%-4%
MIA100%-21%+33%-1%-3%-2%-1%
MIL100%+15%-4%+2%-2%+4%+4%
MIN100%-8%+9%+2%+2%-4%0%
NYM100%+9%-29%-5%-8%+7%+2%
NYY100%+21%-39%-12%+0%+2%+4%
OAK100%-8%+5%+2%-4%-2%-1%
PHI100%+20%-14%-2%+0%+3%-2%
PIT100%-17%-15%+5%+1%-8%-4%
SD100%-2%-9%-2%-5%+1%+6%
SEA100%-2%-31%-6%-5%+9%-2%
SF100%-26%+30%+1%-1%-2%-2%
STL100%-15%-15%-3%-1%-6%-1%
TB100%-5%+24%-4%-3%+4%+0%
TEX100%+8%+33%-1%+5%-5%+2%
TOR100%+11%+10%+12%+0%+3%-1%
WAS100%0%-28%+1%+4%-7%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+54%+5%+5%-3%-1%
ATL100%-11%-25%+2%+3%-3%-1%
BAL100%+12%-25%-11%+1%-4%+1%
BOS100%-12%-20%+19%+5%-1%-1%
CHC100%+11%-1%-3%0%+1%+3%
CHW100%+28%-26%-7%+0%+2%+7%
CIN100%+26%-22%+3%-1%+5%+3%
CLE100%-9%-39%+6%-2%+6%0%
COL100%+6%+38%+1%+17%-14%-2%
DET100%-2%+52%-8%+1%-7%-4%
HOU100%+10%+21%-3%-1%+4%-2%
KC100%-16%+26%+7%+3%-9%0%
LAA100%-1%-28%-4%-1%+1%-3%
LAD100%+6%-54%-2%-5%+5%-5%
MIA100%-23%+30%+1%-1%-2%-3%
MIL100%+12%-9%+5%-3%+5%+4%
MIN100%-6%0%+4%+3%-5%+0%
NYM100%+13%-34%-7%-9%+8%+3%
NYY100%+15%-32%-14%+1%+2%+3%
OAK100%-6%+1%+1%-4%-3%-1%
PHI100%+20%-13%-1%+1%+4%-3%
PIT100%-20%-17%+3%+1%-8%-5%
SD100%-2%-4%-4%-6%+1%+10%
SEA100%-1%-23%-7%-6%+10%0%
SF100%-23%+14%-2%0%-4%-2%
STL100%-17%-9%-1%-1%-6%-2%
TB100%-7%+23%-4%-3%+5%0%
TEX100%+6%+28%+0%+5%-6%+2%
TOR100%+13%+23%+13%+0%+2%0%
WAS100%+1%-24%-1%+4%-6%-3%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+49%+6%+5%-5%+0%
ATL86%-3%-14%+3%-1%+1%+1%
BAL100%+10%-28%-6%+0%-4%-2%
BOS100%-26%+18%+29%+7%-5%+1%
CHC100%-6%-8%-1%+0%+3%+1%
CHW100%+22%-9%-5%-2%+6%+7%
CIN100%+24%-25%-5%-1%+6%+0%
CLE100%+0%-35%+4%+1%-1%+0%
COL100%+12%+37%-4%+14%-14%-1%
DET100%-1%+47%-11%-1%-7%-2%
HOU100%+10%+20%-4%0%+3%-1%
KC100%-17%+17%+5%+5%-9%-2%
LAA100%-6%-28%-3%-2%+3%-4%
LAD100%+10%-49%-4%-4%+2%-4%
MIA100%-19%+42%-8%-4%-1%+1%
MIL100%+20%-1%-2%0%+4%+3%
MIN100%-13%+26%-4%+2%-4%+2%
NYM100%+6%-25%-3%-8%+5%+2%
NYY100%+29%-45%-10%+1%+1%+8%
OAK100%-13%+15%+1%-3%-1%-1%
PHI100%+19%-9%+0%+0%+2%+2%
PIT100%-8%-22%+8%+1%-8%-2%
SD100%-6%-20%+7%-4%+1%+4%
SEA100%0%-35%-3%-5%+9%-4%
SF100%-31%+43%+4%-3%0%-5%
STL100%-10%-17%-6%-1%-5%-1%
TB100%+1%+31%-5%-3%+4%-1%
TEX100%+13%+35%-4%+5%-4%+1%
TOR100%+6%-8%+12%0%+5%-2%
WAS100%-3%-29%+5%+5%-7%-4%