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%+6%+5%-3%-1%
ATL100%-3%-19%-1%+1%+2%+0%
BAL100%+11%-29%-10%+1%-4%-1%
BOS100%-16%+0%+20%+6%-3%-1%
CHC100%+3%0%-3%+1%+1%+2%
CHW100%+27%-21%-6%-1%+3%+7%
CIN100%+25%-29%0%+0%+4%+3%
CLE100%-4%-34%+4%-1%+3%+1%
COL100%+8%+42%+0%+16%-14%-3%
DET100%-4%+58%-7%+1%-7%-1%
HOU100%+10%+23%-3%-1%+4%-1%
KC100%-16%+20%+7%+5%-9%-2%
LAA100%+0%-23%-4%-1%+2%-3%
LAD100%+10%-51%-3%-4%+4%-4%
MIA100%-17%+31%0%-2%-1%-1%
MIL100%+14%-1%+1%-2%+4%+4%
MIN100%-7%+3%+3%+1%-3%+0%
NYM100%+6%-31%-5%-8%+7%+4%
NYY100%+20%-37%-11%0%+3%+3%
OAK100%-10%+7%+2%-4%-2%-1%
PHI100%+19%-9%-2%+0%+3%-1%
PIT100%-17%-14%+6%+1%-8%-3%
SD100%-1%-18%-3%-5%+3%+5%
SEA100%0%-37%-6%-5%+9%-3%
SF100%-25%+28%+1%-1%-1%-2%
STL100%-13%-15%-3%-2%-5%-2%
TB100%-5%+21%-2%-4%+5%+0%
TEX100%+7%+31%-1%+5%-4%+2%
TOR100%+9%+4%+11%0%+2%-1%
WAS100%+1%-26%+2%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+2%+47%+5%+5%-2%-1%
ATL100%-6%-4%+1%+2%+0%+0%
BAL100%+10%-25%-12%+1%-4%+1%
BOS100%-10%-17%+17%+6%-1%-1%
CHC100%+9%+2%-4%+0%+0%+3%
CHW100%+29%-26%-7%+0%+2%+7%
CIN100%+25%-30%+5%+0%+5%+3%
CLE100%-8%-36%+5%-2%+5%0%
COL100%+6%+38%+2%+17%-14%-3%
DET100%-3%+58%-7%+1%-7%-3%
HOU100%+11%+19%-4%-1%+4%-1%
KC100%-17%+23%+7%+4%-9%-1%
LAA100%+1%-25%-4%-1%+1%-2%
LAD100%+10%-53%-3%-4%+4%-5%
MIA100%-19%+30%+3%0%-2%-2%
MIL100%+11%-7%+3%-3%+5%+4%
MIN100%-7%0%+5%+2%-3%0%
NYM100%+10%-37%-7%-8%+8%+4%
NYY100%+15%-30%-12%0%+3%+2%
OAK100%-9%+5%+2%-4%-3%-1%
PHI100%+19%-9%-2%+0%+3%-2%
PIT100%-20%-14%+3%+0%-8%-4%
SD100%-1%-9%-6%-6%+3%+8%
SEA100%+1%-31%-5%-6%+9%-2%
SF100%-24%+16%-1%+0%-4%-2%
STL100%-14%-9%-2%-1%-6%-2%
TB100%-8%+21%-2%-4%+5%+0%
TEX100%+5%+26%+1%+4%-5%+2%
TOR100%+11%+15%+12%+0%+1%-1%
WAS100%+2%-23%-1%+2%-4%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+46%+5%+5%-5%0%
ATL100%-1%-16%-2%-1%+5%0%
BAL100%+12%-31%-7%+1%-3%-3%
BOS100%-25%+22%+28%+8%-6%+1%
CHC100%-6%-2%-2%+1%+3%+1%
CHW100%+25%-15%-6%-2%+5%+7%
CIN100%+27%-23%-5%+0%+5%+0%
CLE100%+1%-32%+3%+1%-1%+1%
COL100%+9%+38%-4%+14%-13%-3%
DET100%-5%+61%-10%-1%-6%+1%
HOU100%+10%+26%-3%0%+3%-1%
KC100%-18%+14%+6%+5%-9%-3%
LAA100%-2%-25%-4%-2%+4%-4%
LAD100%+11%-47%-4%-3%+2%-4%
MIA100%-15%+36%-6%-4%-2%+1%
MIL100%+18%+2%-1%-1%+4%+4%
MIN100%-10%+15%-4%+1%-2%+3%
NYM100%+4%-29%-2%-7%+6%+4%
NYY100%+28%-45%-12%+0%+1%+7%
OAK100%-13%+15%+2%-3%-1%-2%
PHI100%+19%-4%-1%+0%+2%+2%
PIT100%-9%-21%+9%+1%-9%0%
SD100%-3%-29%+5%-4%+2%+3%
SEA100%-3%-38%-6%-6%+9%-4%
SF100%-28%+36%+4%-2%+1%-4%
STL100%-10%-18%-7%-2%-4%-3%
TB100%-1%+26%-3%-4%+5%-1%
TEX100%+12%+31%-2%+5%-4%+2%
TOR100%+5%-10%+11%0%+4%-2%
WAS100%-3%-27%+6%+4%-6%-4%