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%-1%+47%+6%+5%-3%-1%
ATL100%-3%-17%-2%+1%+2%-1%
BAL100%+11%-28%-10%+1%-3%-1%
BOS100%-16%+1%+20%+7%-3%-1%
CHC100%+4%-1%-3%+1%+1%+2%
CHW100%+26%-22%-7%-1%+3%+7%
CIN100%+26%-29%-1%+0%+4%+3%
CLE100%-4%-35%+4%-1%+3%+1%
COL100%+7%+43%+0%+16%-14%-2%
DET100%-4%+56%-7%+1%-7%-1%
HOU100%+10%+23%-3%-1%+4%-1%
KC100%-16%+20%+7%+5%-10%-2%
LAA100%+0%-23%-5%-1%+2%-3%
LAD100%+11%-51%-3%-4%+4%-4%
MIA100%-17%+27%+1%-1%-2%+0%
MIL100%+14%+0%+1%-2%+5%+4%
MIN100%-6%+4%+3%+1%-2%+0%
NYM100%+6%-31%-4%-8%+7%+4%
NYY100%+20%-37%-11%0%+3%+3%
OAK100%-10%+9%+3%-4%-2%-1%
PHI100%+19%-9%-2%+0%+3%-1%
PIT100%-17%-13%+6%+1%-8%-3%
SD100%+1%-17%-2%-6%+3%+5%
SEA100%-1%-37%-6%-6%+9%-4%
SF100%-24%+26%+1%-1%-2%-2%
STL100%-13%-17%-4%-1%-6%-3%
TB100%-4%+21%-3%-4%+5%+0%
TEX100%+8%+30%-1%+5%-4%+2%
TOR100%+9%+3%+11%0%+3%-1%
WAS100%0%-25%+1%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+49%+5%+5%-2%-1%
ATL100%-4%-6%+1%+2%-1%-1%
BAL100%+9%-24%-12%+1%-4%+0%
BOS100%-10%-18%+16%+6%-1%-1%
CHC100%+9%+1%-4%+0%+0%+3%
CHW100%+27%-27%-6%+0%+2%+7%
CIN100%+25%-30%+3%0%+4%+4%
CLE100%-9%-34%+5%-2%+5%+0%
COL100%+5%+38%+3%+17%-14%-3%
DET100%-4%+56%-6%+1%-7%-3%
HOU100%+10%+18%-3%-1%+4%-1%
KC100%-16%+24%+7%+5%-10%-1%
LAA100%+1%-26%-5%0%+1%-2%
LAD100%+10%-53%-3%-4%+4%-5%
MIA100%-18%+26%+3%+0%-2%-2%
MIL100%+11%-5%+3%-3%+5%+4%
MIN100%-6%-4%+6%+1%-3%+0%
NYM100%+10%-36%-7%-9%+8%+5%
NYY100%+14%-28%-11%0%+3%+1%
OAK100%-9%+7%+2%-4%-2%-1%
PHI100%+19%-8%-2%+0%+3%-2%
PIT100%-20%-13%+4%+1%-8%-5%
SD100%+1%-3%-6%-6%+3%+7%
SEA100%+1%-33%-6%-6%+9%-2%
SF100%-24%+15%0%0%-4%-2%
STL100%-15%-11%-2%-1%-6%-3%
TB100%-7%+20%-3%-4%+5%+0%
TEX100%+6%+27%+0%+4%-4%+2%
TOR100%+11%+17%+12%+0%+2%-1%
WAS100%+1%-21%-1%+2%-4%-3%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+0%+47%+5%+5%-5%0%
ATL100%-3%-14%-3%+0%+4%-2%
BAL100%+13%-31%-7%+0%-3%-4%
BOS100%-25%+22%+28%+8%-6%+1%
CHC100%-5%+1%-1%+1%+3%+0%
CHW100%+24%-14%-6%-2%+5%+7%
CIN100%+28%-27%-5%+0%+5%+1%
CLE100%+1%-35%+3%+1%-1%+0%
COL100%+8%+39%-4%+14%-13%-3%
DET100%-5%+61%-10%-1%-6%+1%
HOU100%+9%+29%-2%0%+4%-2%
KC100%-19%+16%+6%+6%-10%-2%
LAA100%-1%-25%-4%-1%+4%-4%
LAD100%+12%-47%-4%-3%+2%-5%
MIA100%-15%+33%-5%-3%-2%+3%
MIL100%+18%+1%-1%-1%+4%+4%
MIN100%-8%+18%-3%+1%-2%+3%
NYM100%+5%-29%-1%-8%+6%+4%
NYY100%+29%-46%-12%+0%+1%+6%
OAK100%-14%+18%+2%-3%-2%-1%
PHI100%+19%-4%-1%+1%+3%+2%
PIT100%-10%-20%+10%+1%-9%+0%
SD100%-3%-31%+8%-5%+3%+3%
SEA100%-4%-39%-6%-6%+9%-5%
SF100%-27%+36%+4%-2%+0%-4%
STL100%-9%-19%-8%-1%-4%-3%
TB100%-1%+26%-3%-4%+5%-1%
TEX100%+12%+29%-3%+4%-4%+2%
TOR100%+5%-11%+11%0%+4%-1%
WAS100%-5%-27%+5%+4%-7%-4%