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%0%+45%+7%+5%-3%-1%
ATL100%-4%-23%-1%+1%+2%+0%
BAL100%+11%-29%-10%+1%-4%0%
BOS100%-16%+0%+21%+6%-3%-1%
CHC100%+3%-1%-3%+1%+1%+2%
CHW100%+27%-22%-6%-1%+3%+7%
CIN100%+25%-29%0%+0%+5%+3%
CLE100%-4%-35%+4%-1%+3%+1%
COL100%+8%+41%0%+16%-14%-3%
DET100%-4%+59%-7%+1%-7%-1%
HOU100%+11%+24%-3%-1%+4%-1%
KC100%-17%+20%+7%+5%-9%-2%
LAA100%0%-25%-4%-1%+2%-3%
LAD100%+10%-50%-3%-4%+4%-4%
MIA100%-17%+34%0%-2%-1%-1%
MIL100%+14%-1%+1%-2%+4%+4%
MIN100%-7%+1%+3%+1%-3%+0%
NYM100%+6%-31%-5%-8%+7%+3%
NYY100%+19%-37%-11%0%+3%+3%
OAK100%-10%+7%+2%-4%-2%-1%
PHI100%+19%-10%-2%+0%+3%-1%
PIT100%-17%-13%+6%+1%-8%-3%
SD100%-2%-16%-3%-6%+3%+6%
SEA100%+0%-36%-6%-6%+9%-3%
SF100%-25%+29%+2%-1%-1%-2%
STL100%-14%-16%-4%-2%-5%-2%
TB100%-5%+21%-3%-4%+4%+0%
TEX100%+7%+33%-1%+5%-4%+2%
TOR100%+10%+5%+11%+0%+2%-2%
WAS100%+1%-26%+1%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+2%+47%+6%+5%-2%-1%
ATL100%-5%-9%+0%+2%-1%0%
BAL100%+10%-25%-12%+1%-4%+1%
BOS100%-10%-17%+17%+6%-1%-1%
CHC100%+9%+1%-4%0%+0%+3%
CHW100%+28%-26%-7%0%+2%+7%
CIN100%+25%-28%+4%+0%+5%+3%
CLE100%-8%-37%+5%-2%+5%0%
COL100%+6%+37%+2%+17%-14%-3%
DET100%-3%+58%-7%+1%-7%-3%
HOU100%+11%+21%-4%-1%+4%-1%
KC100%-17%+23%+7%+4%-9%-1%
LAA100%+0%-26%-4%-1%+1%-2%
LAD100%+10%-53%-3%-4%+4%-5%
MIA100%-19%+31%+2%0%-2%-3%
MIL100%+11%-7%+3%-3%+5%+4%
MIN100%-7%-2%+5%+1%-3%+0%
NYM100%+10%-36%-6%-9%+8%+4%
NYY100%+14%-31%-11%+0%+3%+1%
OAK100%-8%+5%+1%-4%-3%-1%
PHI100%+19%-9%-2%+1%+3%-3%
PIT100%-20%-14%+4%+1%-8%-4%
SD100%-1%-8%-6%-7%+3%+9%
SEA100%+1%-29%-6%-6%+9%-2%
SF100%-24%+16%0%+0%-4%-2%
STL100%-15%-10%-2%-1%-6%-2%
TB100%-8%+19%-2%-4%+5%+0%
TEX100%+5%+27%+1%+5%-5%+2%
TOR100%+12%+16%+12%+1%+1%-1%
WAS100%+3%-23%-2%+2%-4%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+46%+6%+5%-5%0%
ATL100%-3%-18%-1%-1%+5%0%
BAL100%+12%-31%-7%+1%-4%-3%
BOS100%-25%+22%+28%+8%-5%+0%
CHC100%-6%-1%-2%+1%+2%+1%
CHW100%+25%-14%-6%-2%+5%+7%
CIN100%+26%-30%-5%+0%+5%+0%
CLE100%+1%-33%+3%+1%-1%+0%
COL100%+10%+39%-5%+14%-14%-3%
DET100%-5%+61%-10%-1%-6%+1%
HOU100%+10%+26%-3%0%+3%-1%
KC100%-19%+15%+6%+6%-9%-3%
LAA100%-2%-26%-4%-1%+3%-4%
LAD100%+12%-47%-4%-3%+2%-4%
MIA100%-15%+41%-6%-4%-2%+2%
MIL100%+19%0%-1%-1%+4%+4%
MIN100%-9%+14%-4%+1%-2%+2%
NYM100%+4%-30%-3%-7%+6%+3%
NYY100%+27%-46%-11%+0%+2%+7%
OAK100%-13%+15%+2%-3%-1%-2%
PHI100%+19%-6%-1%+0%+2%+2%
PIT100%-9%-20%+9%+1%-9%0%
SD100%-5%-26%+5%-5%+3%+3%
SEA100%-2%-37%-6%-6%+9%-3%
SF100%-28%+38%+5%-2%+1%-4%
STL100%-10%-18%-7%-2%-4%-3%
TB100%0%+26%-4%-3%+4%-1%
TEX100%+11%+33%-3%+5%-4%+2%
TOR100%+5%-9%+12%0%+4%-2%
WAS100%-3%-25%+5%+4%-6%-4%