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%+3%+53%+7%+5%-3%-1%
ATL90%-4%-25%+2%+1%-1%-1%
BAL100%+12%-29%-9%+1%-4%0%
BOS100%-17%-3%+22%+6%-2%-1%
CHC100%+4%-5%-2%+1%+1%+2%
CHW100%+26%-20%-6%-1%+4%+7%
CIN100%+24%-28%-1%0%+5%+2%
CLE100%-5%-35%+5%-1%+3%+1%
COL100%+9%+41%-1%+17%-14%-2%
DET100%-1%+50%-9%+1%-8%-2%
HOU100%+11%+20%-3%-1%+4%-1%
KC100%-16%+21%+6%+4%-9%-2%
LAA100%-3%-27%-4%-1%+2%-4%
LAD100%+8%-52%-4%-4%+4%-4%
MIA100%-20%+33%-2%-3%-1%-1%
MIL100%+15%-4%+2%-2%+5%+4%
MIN100%-9%+9%+3%+2%-4%0%
NYM100%+9%-29%-5%-8%+7%+2%
NYY100%+20%-39%-12%0%+2%+4%
OAK100%-8%+6%+2%-4%-2%-1%
PHI100%+19%-14%-1%+0%+3%-2%
PIT100%-17%-15%+5%+1%-8%-4%
SD100%-3%-10%-2%-5%+1%+6%
SEA100%-1%-32%-6%-5%+9%-1%
SF100%-26%+30%+0%-1%-2%-3%
STL100%-14%-14%-3%-1%-5%-1%
TB100%-5%+25%-4%-3%+4%0%
TEX100%+8%+34%-1%+5%-5%+2%
TOR100%+10%+8%+12%+0%+3%-1%
WAS100%0%-27%+1%+4%-7%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+56%+5%+5%-3%-1%
ATL100%-9%-20%0%+3%-3%-2%
BAL100%+12%-25%-11%+1%-3%+1%
BOS100%-11%-21%+19%+5%-1%-1%
CHC100%+10%-1%-3%0%+0%+3%
CHW100%+28%-26%-7%+0%+3%+7%
CIN100%+26%-23%+3%-1%+5%+3%
CLE100%-9%-38%+6%-2%+6%0%
COL100%+6%+38%+2%+17%-14%-2%
DET100%-2%+52%-8%+2%-7%-4%
HOU100%+11%+20%-3%-1%+4%-1%
KC100%-16%+25%+7%+4%-9%0%
LAA100%-2%-27%-4%-1%+1%-3%
LAD100%+7%-54%-3%-4%+5%-5%
MIA100%-22%+29%+1%-1%-2%-3%
MIL100%+12%-9%+5%-3%+5%+4%
MIN100%-6%+1%+5%+2%-5%+0%
NYM100%+14%-36%-6%-9%+8%+2%
NYY100%+15%-31%-14%+1%+2%+3%
OAK100%-6%+2%+1%-4%-3%-1%
PHI100%+20%-12%-1%+1%+3%-3%
PIT100%-20%-18%+3%+1%-8%-5%
SD100%-3%-5%-5%-6%+1%+11%
SEA100%0%-24%-8%-6%+10%0%
SF100%-23%+14%-2%0%-4%-2%
STL100%-16%-9%-1%-1%-6%-2%
TB100%-7%+25%-4%-3%+5%0%
TEX100%+5%+28%+1%+5%-6%+3%
TOR100%+12%+21%+13%+1%+1%0%
WAS100%+1%-24%-1%+4%-6%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+50%+6%+6%-5%0%
ATL90%-3%-15%+3%-2%+0%+0%
BAL100%+11%-29%-6%+0%-4%-2%
BOS100%-25%+18%+29%+7%-5%+1%
CHC100%-6%-8%-1%+0%+3%+1%
CHW100%+23%-9%-6%-2%+6%+7%
CIN100%+24%-26%-5%0%+6%+0%
CLE100%0%-34%+4%+1%-1%+1%
COL100%+12%+37%-4%+14%-14%-1%
DET100%-1%+48%-12%0%-7%-1%
HOU100%+11%+21%-4%0%+3%-1%
KC100%-18%+16%+5%+5%-9%-3%
LAA100%-6%-29%-3%-2%+3%-4%
LAD100%+11%-49%-4%-4%+2%-4%
MIA100%-18%+40%-8%-5%-1%+2%
MIL100%+19%+0%-2%0%+5%+3%
MIN100%-13%+25%-4%+2%-4%+2%
NYM100%+6%-24%-3%-8%+5%+1%
NYY100%+28%-46%-11%+1%+1%+7%
OAK100%-13%+17%+1%-4%-1%-1%
PHI100%+20%-9%+0%+1%+2%+2%
PIT100%-8%-21%+8%+1%-8%-1%
SD100%-8%-20%+6%-4%+1%+3%
SEA100%-1%-35%-2%-5%+8%-3%
SF100%-31%+42%+4%-2%0%-5%
STL100%-10%-16%-6%-1%-5%-1%
TB100%+0%+30%-5%-3%+4%-1%
TEX100%+13%+36%-4%+5%-4%+2%
TOR100%+7%-9%+11%0%+5%-3%
WAS100%-4%-28%+5%+5%-7%-4%