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%+2%+49%+7%+5%-3%-1%
ATL100%-5%-21%+1%+1%0%-1%
BAL100%+13%-28%-10%+1%-4%0%
BOS100%-16%-3%+22%+6%-3%-1%
CHC100%+4%-3%-3%+1%+1%+2%
CHW100%+27%-21%-7%-1%+4%+7%
CIN100%+25%-28%0%+0%+5%+2%
CLE100%-4%-35%+4%-1%+3%+1%
COL100%+8%+42%0%+17%-14%-2%
DET100%-3%+57%-8%+1%-7%-2%
HOU100%+11%+23%-3%-1%+4%-1%
KC100%-17%+20%+6%+5%-9%-2%
LAA100%-1%-27%-4%-1%+2%-3%
LAD100%+10%-52%-3%-4%+4%-4%
MIA100%-19%+34%-2%-3%-1%0%
MIL100%+14%-1%+0%-2%+4%+4%
MIN100%-8%+5%+3%+1%-4%+0%
NYM100%+9%-33%-3%-8%+7%+2%
NYY100%+20%-38%-12%0%+2%+4%
OAK100%-9%+6%+2%-4%-2%-1%
PHI100%+19%-11%-2%+0%+3%-1%
PIT100%-17%-14%+7%+1%-8%-3%
SD100%-2%-15%-1%-6%+3%+6%
SEA100%-1%-33%-7%-5%+9%-1%
SF100%-25%+29%+1%-1%-2%-2%
STL100%-14%-15%-4%-1%-6%-2%
TB100%-5%+21%-3%-4%+5%+0%
TEX100%+6%+33%-1%+5%-5%+2%
TOR100%+9%+8%+11%+0%+2%-2%
WAS100%0%-27%+0%+3%-6%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+52%+6%+5%-2%-1%
ATL100%-8%-8%+1%+2%-2%-1%
BAL100%+13%-25%-12%+1%-3%+1%
BOS100%-11%-20%+19%+6%-1%-1%
CHC100%+10%+0%-3%+0%+0%+3%
CHW100%+29%-26%-7%0%+2%+7%
CIN100%+25%-27%+5%0%+5%+3%
CLE100%-8%-37%+5%-2%+6%+0%
COL100%+5%+37%+2%+17%-14%-3%
DET100%-3%+59%-7%+1%-7%-3%
HOU100%+11%+20%-3%-1%+4%-1%
KC100%-16%+22%+7%+4%-9%-1%
LAA100%0%-27%-4%-1%+1%-2%
LAD100%+9%-54%-3%-4%+4%-5%
MIA100%-20%+32%+1%-1%-1%-3%
MIL100%+12%-7%+2%-3%+5%+5%
MIN100%-7%-2%+6%+2%-4%0%
NYM100%+14%-38%-5%-8%+8%+3%
NYY100%+15%-30%-13%+0%+3%+2%
OAK100%-7%+4%+1%-4%-3%-2%
PHI100%+19%-10%-2%+0%+3%-2%
PIT100%-20%-14%+4%+1%-8%-4%
SD100%-1%-9%-4%-7%+3%+11%
SEA100%+0%-23%-7%-6%+9%0%
SF100%-24%+15%-1%0%-4%-2%
STL100%-16%-10%-2%-1%-6%-3%
TB100%-8%+19%-3%-4%+5%+0%
TEX100%+4%+27%+1%+5%-6%+2%
TOR100%+11%+19%+12%+1%+1%-1%
WAS100%+1%-24%-3%+3%-5%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+47%+6%+6%-5%0%
ATL100%-1%-15%+0%-1%+2%-1%
BAL100%+13%-29%-6%+0%-4%-2%
BOS100%-26%+17%+29%+8%-5%+1%
CHC100%-5%-3%-2%+1%+3%+1%
CHW100%+25%-13%-6%-3%+6%+6%
CIN100%+26%-31%-5%+0%+5%+0%
CLE100%+0%-33%+4%+1%-1%0%
COL100%+11%+40%-4%+14%-13%-2%
DET100%-3%+57%-10%-1%-6%+0%
HOU100%+10%+26%-3%0%+3%-1%
KC100%-19%+15%+6%+6%-9%-3%
LAA100%-3%-29%-4%-2%+3%-3%
LAD100%+11%-49%-4%-4%+2%-4%
MIA100%-19%+41%-9%-5%-1%+3%
MIL100%+17%0%-2%0%+4%+3%
MIN100%-10%+21%-4%+1%-3%+3%
NYM100%+5%-30%-2%-7%+6%+2%
NYY100%+29%-46%-12%+1%+1%+7%
OAK100%-13%+15%+1%-3%-1%-2%
PHI100%+19%-7%0%+1%+2%+3%
PIT100%-9%-20%+10%+1%-8%-1%
SD100%-7%-24%+7%-5%+2%+4%
SEA100%0%-38%-5%-6%+9%-3%
SF100%-29%+41%+5%-2%+0%-4%
STL100%-10%-17%-8%-2%-4%-2%
TB100%-1%+27%-4%-3%+4%-1%
TEX100%+11%+34%-4%+5%-4%+2%
TOR100%+6%-7%+11%0%+4%-2%
WAS100%-3%-28%+5%+4%-6%-5%