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%-2%-19%-1%+1%+2%-1%
BAL100%+11%-29%-11%+1%-4%-1%
BOS100%-16%+1%+20%+7%-3%-1%
CHC100%+4%-1%-3%+1%+1%+2%
CHW100%+26%-23%-6%-1%+3%+7%
CIN100%+26%-29%-1%+0%+4%+3%
CLE100%-5%-33%+4%-1%+3%+1%
COL100%+7%+42%+0%+16%-14%-3%
DET100%-4%+57%-7%+1%-7%-1%
HOU100%+9%+23%-3%-1%+4%-1%
KC100%-16%+20%+6%+5%-10%-2%
LAA100%+1%-23%-5%-1%+2%-3%
LAD100%+10%-51%-3%-4%+4%-4%
MIA100%-16%+28%+1%-2%-2%-1%
MIL100%+14%0%+1%-2%+5%+4%
MIN100%-6%+3%+3%+1%-3%+0%
NYM100%+6%-31%-4%-8%+7%+4%
NYY100%+20%-37%-11%0%+2%+3%
OAK100%-10%+9%+3%-4%-2%-1%
PHI100%+19%-8%-2%+0%+3%-1%
PIT100%-17%-13%+6%+1%-8%-3%
SD100%-1%-17%-2%-5%+3%+5%
SEA100%0%-36%-6%-6%+9%-3%
SF100%-24%+28%+1%-1%-2%-2%
STL100%-13%-17%-4%-1%-5%-3%
TB100%-5%+21%-2%-4%+5%+0%
TEX100%+8%+30%-1%+5%-4%+2%
TOR100%+9%+4%+11%0%+2%-1%
WAS100%0%-25%+1%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+48%+5%+5%-2%-1%
ATL100%-3%-1%0%+2%0%-1%
BAL100%+10%-25%-12%+1%-4%+0%
BOS100%-10%-17%+16%+6%-1%-1%
CHC100%+9%+0%-4%+0%+0%+3%
CHW100%+28%-27%-6%+0%+2%+7%
CIN100%+25%-30%+3%0%+5%+3%
CLE100%-9%-34%+5%-2%+5%+0%
COL100%+6%+38%+3%+17%-14%-3%
DET100%-4%+58%-7%+1%-7%-3%
HOU100%+10%+18%-3%0%+4%-1%
KC100%-17%+23%+7%+4%-10%-1%
LAA100%+1%-25%-5%-1%+1%-2%
LAD100%+10%-53%-2%-4%+4%-5%
MIA100%-18%+27%+3%+0%-2%-2%
MIL100%+11%-6%+3%-3%+5%+4%
MIN100%-6%-3%+6%+2%-3%+0%
NYM100%+9%-36%-8%-8%+7%+5%
NYY100%+14%-30%-11%+0%+2%+1%
OAK100%-9%+7%+2%-4%-2%-1%
PHI100%+19%-9%-1%0%+3%-2%
PIT100%-20%-12%+4%+1%-8%-5%
SD100%+0%-4%-5%-6%+3%+8%
SEA100%+1%-32%-5%-6%+9%-1%
SF100%-23%+15%-1%0%-4%-2%
STL100%-14%-11%-2%-1%-6%-3%
TB100%-7%+19%-3%-4%+5%+0%
TEX100%+6%+27%+1%+4%-5%+2%
TOR100%+11%+17%+12%+0%+1%-1%
WAS100%+1%-21%-1%+2%-4%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+48%+5%+5%-5%0%
ATL100%0%-17%-2%-1%+5%-2%
BAL100%+13%-32%-7%+0%-3%-4%
BOS100%-25%+22%+28%+8%-6%+1%
CHC100%-5%-1%-2%+1%+3%+1%
CHW100%+24%-17%-6%-2%+5%+7%
CIN100%+28%-23%-5%0%+5%+0%
CLE100%+1%-33%+3%+1%-1%+0%
COL100%+8%+39%-4%+14%-13%-3%
DET100%-5%+61%-9%-1%-6%+1%
HOU100%+8%+29%-2%0%+3%-2%
KC100%-19%+15%+6%+6%-10%-2%
LAA100%-2%-25%-4%-2%+4%-4%
LAD100%+12%-47%-4%-4%+2%-4%
MIA100%-14%+34%-5%-3%-2%+2%
MIL100%+18%+2%-1%-1%+4%+4%
MIN100%-7%+16%-3%+1%-3%+3%
NYM100%+5%-29%-1%-7%+6%+5%
NYY100%+29%-45%-11%+0%+1%+7%
OAK100%-13%+17%+2%-3%-1%-2%
PHI100%+19%-3%-1%+0%+3%+2%
PIT100%-10%-20%+10%+1%-9%0%
SD100%-6%-31%+6%-4%+2%+3%
SEA100%-3%-37%-6%-6%+9%-4%
SF100%-28%+35%+4%-2%+1%-5%
STL100%-10%-19%-7%-2%-4%-3%
TB100%-1%+26%-3%-4%+5%-1%
TEX100%+12%+29%-3%+5%-4%+2%
TOR100%+5%-10%+11%0%+4%-1%
WAS100%-4%-26%+5%+4%-7%-4%