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%+4%+52%+7%+5%-3%0%
ATL91%-5%-24%+3%+1%-1%-1%
BAL100%+12%-29%-9%+1%-4%0%
BOS100%-17%-3%+22%+6%-3%-1%
CHC100%+4%-5%-2%+1%+1%+2%
CHW100%+26%-21%-6%-1%+4%+7%
CIN100%+24%-28%0%0%+5%+2%
CLE100%-5%-35%+5%-1%+3%+1%
COL100%+9%+41%0%+17%-14%-2%
DET100%-2%+51%-9%+1%-8%-3%
HOU100%+11%+21%-4%-1%+4%-1%
KC100%-16%+22%+6%+4%-9%-2%
LAA100%-3%-27%-4%-2%+2%-4%
LAD100%+8%-52%-4%-4%+4%-4%
MIA100%-21%+34%-1%-3%-1%0%
MIL100%+14%-3%+1%-2%+5%+4%
MIN100%-9%+7%+3%+2%-4%+0%
NYM100%+10%-29%-5%-8%+7%+2%
NYY100%+20%-39%-12%+0%+2%+4%
OAK100%-8%+6%+2%-4%-2%-1%
PHI100%+19%-14%-2%+0%+3%-2%
PIT100%-17%-15%+6%+1%-8%-4%
SD100%-3%-9%-2%-5%+1%+6%
SEA100%-1%-32%-6%-5%+9%-1%
SF100%-26%+30%+0%-1%-2%-3%
STL100%-14%-15%-3%-1%-6%-1%
TB100%-5%+24%-4%-3%+4%0%
TEX100%+7%+34%-1%+5%-5%+2%
TOR100%+11%+8%+11%+0%+3%-1%
WAS100%+0%-27%+1%+4%-6%-3%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+6%+55%+5%+5%-3%-1%
ATL100%-10%-19%+1%+3%-3%-2%
BAL100%+12%-26%-11%+1%-4%+1%
BOS100%-11%-20%+19%+5%-1%-1%
CHC100%+10%-1%-3%0%+1%+3%
CHW100%+28%-26%-7%+0%+3%+7%
CIN100%+26%-24%+4%-1%+5%+3%
CLE100%-10%-38%+6%-2%+6%0%
COL100%+6%+38%+2%+17%-14%-2%
DET100%-2%+53%-8%+2%-7%-4%
HOU100%+11%+21%-4%-1%+4%-2%
KC100%-16%+25%+7%+4%-9%0%
LAA100%-2%-28%-4%-1%+1%-3%
LAD100%+7%-54%-3%-4%+4%-5%
MIA100%-22%+30%+1%-1%-2%-3%
MIL100%+12%-9%+4%-3%+5%+4%
MIN100%-6%-1%+5%+3%-5%+1%
NYM100%+15%-35%-6%-9%+9%+2%
NYY100%+15%-31%-14%+1%+2%+3%
OAK100%-6%+3%+1%-4%-3%-1%
PHI100%+19%-12%-1%+1%+3%-3%
PIT100%-20%-17%+3%+1%-8%-5%
SD100%-3%-4%-4%-6%+2%+11%
SEA100%0%-25%-8%-6%+10%+0%
SF100%-23%+14%-2%0%-4%-2%
STL100%-16%-10%-1%-1%-6%-1%
TB100%-7%+24%-4%-3%+5%0%
TEX100%+5%+28%+1%+5%-6%+3%
TOR100%+12%+21%+13%+1%+1%0%
WAS100%+1%-25%-1%+4%-5%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+4%+50%+6%+6%-5%0%
ATL92%-3%-15%+4%-1%0%+0%
BAL100%+10%-28%-6%+0%-4%-2%
BOS100%-26%+19%+29%+7%-5%+1%
CHC100%-6%-7%-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%+49%-12%0%-7%-2%
HOU100%+10%+21%-4%0%+3%-1%
KC100%-18%+16%+5%+5%-9%-3%
LAA100%-5%-29%-3%-2%+3%-4%
LAD100%+11%-49%-4%-3%+2%-4%
MIA100%-19%+41%-9%-5%-1%+2%
MIL100%+19%+0%-2%0%+4%+2%
MIN100%-13%+23%-3%+2%-4%+2%
NYM100%+6%-25%-4%-8%+6%+1%
NYY100%+27%-46%-11%+1%+1%+7%
OAK100%-13%+17%+0%-3%-1%-1%
PHI100%+20%-9%+0%+1%+2%+2%
PIT100%-8%-22%+8%+1%-8%-1%
SD100%-7%-20%+6%-4%+1%+3%
SEA100%-1%-36%-2%-5%+9%-3%
SF100%-31%+42%+4%-3%+0%-5%
STL100%-9%-16%-6%-1%-5%-1%
TB100%+0%+29%-5%-3%+4%-1%
TEX100%+13%+35%-4%+5%-4%+2%
TOR100%+7%-9%+11%0%+5%-2%
WAS100%-3%-29%+5%+5%-7%-4%