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%+5%+48%+7%+5%-4%-1%
ATL100%-4%-6%-4%+0%+3%+1%
BAL100%+12%-29%-10%+1%-3%0%
BOS100%-17%-4%+22%+6%-2%-1%
CHC100%+4%-10%-2%+1%+2%+2%
CHW100%+28%-20%-5%+0%+3%+8%
CIN100%+26%-28%-1%-1%+4%+1%
CLE100%-6%-36%+3%-2%+4%+1%
COL100%+11%+35%-1%+16%-14%-2%
DET100%-4%+50%-10%+1%-8%-2%
HOU100%+13%+23%-3%+0%+3%-1%
KC100%-13%+19%+5%+5%-9%-1%
LAA100%-7%-28%-3%-1%+1%-4%
LAD100%+7%-50%-5%-4%+4%-2%
MIA99%-30%+64%+3%+1%-7%-2%
MIL100%+15%-4%+0%-1%+4%+5%
MIN100%-13%+14%+1%+2%-5%-3%
NYM100%+15%-26%-1%-6%+6%+5%
NYY100%+22%-39%-9%+1%+1%+4%
OAK100%-6%+6%0%-4%-2%+1%
PHI100%+16%-15%0%+1%+2%-3%
PIT100%-18%-18%+5%+1%-9%-6%
SD67%+2%+5%-4%-6%+4%+5%
SEA73%-5%-33%+1%-4%+5%-4%
SF100%-23%+21%+1%-1%-2%-2%
STL100%-15%-12%-3%-1%-5%+1%
TB100%-3%+24%-4%-3%+3%0%
TEX100%+11%+33%-1%+4%-4%+0%
TOR100%+13%+11%+11%+0%+4%-1%
WAS100%-6%-26%+0%+3%-7%-6%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+7%+52%+5%+6%-4%-2%
ATL100%-1%-9%-4%+0%+2%+1%
BAL100%+12%-26%-12%+1%-3%+1%
BOS100%-11%-25%+21%+5%-1%-1%
CHC100%+11%-6%-2%+0%+2%+3%
CHW100%+32%-24%-6%+1%+2%+9%
CIN100%+27%-26%+1%-1%+5%+2%
CLE100%-11%-37%+5%-3%+7%-1%
COL100%+9%+33%+1%+17%-15%-3%
DET100%-5%+52%-9%+1%-7%-3%
HOU100%+13%+25%-3%+1%+3%-1%
KC100%-14%+22%+5%+4%-10%+0%
LAA100%-6%-28%-4%0%+0%-4%
LAD100%+6%-54%-3%-5%+5%-3%
MIA100%-25%+71%+2%+3%-8%-3%
MIL100%+12%-13%+3%-2%+3%+5%
MIN100%-8%+4%+2%+4%-6%-3%
NYM100%+24%-37%-4%-4%+7%+7%
NYY100%+14%-35%-10%+1%+2%+3%
OAK100%-3%+1%0%-4%-3%-1%
PHI100%+16%-17%+1%+1%+2%-4%
PIT100%-22%-17%+3%+1%-9%-7%
SD90%-6%+15%-5%-9%+3%+11%
SEA84%-9%-32%+4%-7%+8%-7%
SF100%-22%+10%-1%0%-5%-1%
STL100%-17%-8%-1%-2%-5%-1%
TB100%-5%+26%-5%-3%+3%0%
TEX100%+9%+24%0%+4%-5%+2%
TOR100%+16%+28%+12%+1%+2%+0%
WAS100%-7%-23%0%+2%-7%-6%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+8%+41%+6%+5%-5%+1%
ATL100%-4%-8%-5%0%+3%+4%
BAL100%+12%-30%-6%0%-2%-1%
BOS100%-25%+22%+27%+7%-5%+0%
CHC100%-4%-17%-1%+0%+3%+0%
CHW100%+21%-14%-2%0%+6%+8%
CIN100%+25%-31%-4%0%+4%-1%
CLE100%-1%-33%+1%-1%+0%+1%
COL100%+13%+30%-5%+13%-14%-3%
DET100%-3%+49%-13%+0%-7%-3%
HOU100%+11%+20%-3%+1%0%+0%
KC100%-15%+15%+5%+5%-9%-2%
LAA100%-11%-29%-2%-1%+3%-5%
LAD100%+9%-45%-4%-3%+2%-1%
MIA85%-32%+39%-1%+0%-5%-3%
MIL100%+19%+4%-2%+0%+5%+3%
MIN100%-19%+28%-5%+2%-5%-1%
NYM94%+6%-16%+2%-10%+5%+5%
NYY100%+27%-44%-10%+3%-1%+7%
OAK100%-11%+23%-1%-3%-3%+1%
PHI100%+17%-7%-1%+1%+0%0%
PIT100%-9%-25%+8%+2%-9%-3%
SD66%+9%+3%+2%-5%+6%+3%
SEA86%+4%-45%+5%-4%+5%-3%
SF100%-28%+34%+4%-3%+0%-5%
STL100%-13%-13%-7%-1%-5%+3%
TB100%+1%+29%-4%-3%+3%-2%
TEX100%+17%+34%-3%+4%-2%-2%
TOR100%+8%-9%+11%-1%+7%-1%
WAS100%-7%-24%+2%+3%-8%-7%