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%+47%+7%+5%-3%0%
ATL100%-5%-13%-2%+1%+2%-1%
BAL100%+11%-27%-10%+1%-4%-1%
BOS100%-16%+1%+20%+6%-3%0%
CHC100%+3%+1%-3%+0%+1%+2%
CHW100%+25%-22%-6%-1%+2%+6%
CIN100%+27%-29%-1%+1%+4%+3%
CLE100%-5%-35%+4%-1%+3%+1%
COL100%+6%+42%+0%+16%-14%-2%
DET100%-4%+54%-7%+1%-7%-1%
HOU100%+10%+22%-3%0%+4%-1%
KC100%-17%+22%+7%+5%-9%-1%
LAA100%+1%-23%-5%-1%+2%-3%
LAD100%+10%-50%-3%-4%+3%-4%
MIA100%-15%+26%+1%-1%-2%+2%
MIL100%+14%+1%+1%-2%+5%+4%
MIN100%-5%+4%+3%+2%-3%+1%
NYM100%+7%-29%-3%-8%+7%+5%
NYY100%+20%-36%-11%0%+2%+3%
OAK100%-10%+8%+3%-4%-2%-1%
PHI100%+18%-10%-2%0%+3%-2%
PIT100%-17%-15%+6%+1%-8%-3%
SD100%+2%-18%-2%-5%+4%+4%
SEA100%0%-36%-7%-6%+10%-3%
SF100%-25%+27%+2%-1%-2%-3%
STL100%-14%-16%-4%-1%-6%-2%
TB100%-4%+22%-3%-4%+5%+0%
TEX100%+7%+30%-1%+4%-4%+2%
TOR100%+9%+2%+11%0%+2%-1%
WAS100%+0%-23%+1%+2%-5%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+0%+49%+5%+5%-3%-1%
ATL100%-7%-3%+1%+2%0%0%
BAL100%+8%-22%-12%+1%-4%+0%
BOS100%-10%-17%+15%+6%-1%0%
CHC100%+9%+2%-4%0%+1%+3%
CHW100%+26%-27%-6%+0%+1%+6%
CIN100%+26%-30%+3%+0%+4%+4%
CLE100%-9%-34%+5%-2%+5%+0%
COL100%+5%+38%+2%+17%-14%-3%
DET100%-4%+53%-6%+1%-7%-2%
HOU100%+11%+18%-3%-1%+4%-1%
KC100%-17%+26%+8%+4%-9%-1%
LAA100%+1%-24%-5%0%+1%-2%
LAD100%+10%-54%-3%-4%+4%-5%
MIA100%-16%+26%+4%+0%-2%-1%
MIL100%+12%-5%+3%-3%+6%+4%
MIN100%-5%-5%+6%+2%-3%+1%
NYM100%+11%-32%-7%-8%+8%+5%
NYY100%+15%-27%-11%0%+2%+1%
OAK100%-9%+5%+2%-4%-2%-1%
PHI100%+18%-9%-2%0%+3%-2%
PIT100%-19%-14%+4%+1%-8%-4%
SD100%+2%-6%-6%-6%+4%+6%
SEA100%+3%-28%-7%-6%+10%-2%
SF100%-24%+16%+0%0%-4%-2%
STL100%-16%-11%-2%-1%-6%-3%
TB100%-6%+19%-3%-4%+5%0%
TEX100%+6%+26%+0%+4%-4%+2%
TOR100%+11%+16%+12%+0%+1%-1%
WAS100%+2%-19%-1%+1%-3%-3%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%-2%+45%+6%+5%-5%0%
ATL100%-2%-12%-4%+0%+6%0%
BAL100%+13%-31%-7%+1%-3%-4%
BOS100%-25%+20%+28%+8%-6%+1%
CHC100%-7%+3%-1%+0%+3%+0%
CHW100%+23%-14%-6%-2%+5%+6%
CIN100%+29%-29%-5%+0%+5%+1%
CLE100%+1%-36%+4%+1%-1%0%
COL100%+8%+38%-4%+14%-13%-3%
DET100%-4%+60%-10%-1%-6%+1%
HOU100%+9%+27%-3%+0%+3%-2%
KC100%-19%+18%+6%+6%-9%-1%
LAA100%+0%-24%-5%-2%+4%-4%
LAD100%+11%-45%-4%-3%+2%-5%
MIA100%-12%+29%-5%-2%-2%+5%
MIL100%+20%+3%-1%-1%+5%+4%
MIN100%-9%+19%-3%+2%-2%+3%
NYM100%+6%-28%0%-8%+7%+5%
NYY100%+28%-46%-11%0%+0%+7%
OAK100%-14%+17%+3%-3%-1%-1%
PHI100%+18%-4%-1%+1%+2%+1%
PIT100%-10%-23%+10%+2%-9%0%
SD100%-2%-30%+6%-5%+3%+3%
SEA100%-5%-41%-7%-7%+9%-5%
SF100%-27%+37%+4%-2%+0%-5%
STL100%-10%-17%-8%-1%-4%-2%
TB100%-1%+28%-3%-4%+4%-1%
TEX100%+12%+30%-3%+4%-4%+1%
TOR100%+5%-11%+11%0%+4%-1%
WAS100%-4%-25%+4%+4%-6%-5%