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%0%+47%+7%+5%-3%-1%
ATL100%-4%-21%-1%+1%+2%+0%
BAL100%+12%-29%-10%+1%-3%0%
BOS100%-16%-1%+20%+6%-3%-1%
CHC100%+3%-2%-3%+1%+1%+2%
CHW100%+27%-21%-6%-1%+3%+7%
CIN100%+25%-29%0%+0%+5%+3%
CLE100%-4%-34%+4%-1%+3%+1%
COL100%+8%+40%0%+17%-14%-3%
DET100%-4%+58%-7%+1%-7%-1%
HOU100%+11%+23%-3%-1%+4%-1%
KC100%-17%+20%+7%+5%-9%-2%
LAA100%0%-25%-4%-1%+2%-3%
LAD100%+10%-50%-3%-4%+4%-4%
MIA100%-17%+32%-1%-2%-1%-1%
MIL100%+14%-1%+1%-2%+4%+4%
MIN100%-7%+1%+3%+1%-3%+1%
NYM100%+6%-32%-5%-8%+7%+3%
NYY100%+20%-37%-11%0%+3%+3%
OAK100%-9%+6%+2%-4%-2%-1%
PHI100%+19%-10%-2%+0%+3%-1%
PIT100%-17%-13%+6%+1%-8%-3%
SD100%-1%-17%-3%-6%+3%+5%
SEA100%0%-34%-6%-5%+9%-3%
SF100%-25%+29%+2%-1%-1%-2%
STL100%-14%-14%-4%-2%-6%-3%
TB100%-5%+22%-3%-4%+5%+0%
TEX100%+6%+32%-1%+5%-4%+2%
TOR100%+10%+6%+11%+0%+2%-2%
WAS100%+1%-26%+1%+2%-5%-4%

Right-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+2%+50%+6%+5%-2%-1%
ATL100%-4%-9%0%+2%-1%+1%
BAL100%+11%-25%-12%+1%-3%+2%
BOS100%-10%-19%+17%+6%-1%-1%
CHC100%+9%+1%-4%0%+0%+3%
CHW100%+28%-26%-7%0%+2%+7%
CIN100%+25%-28%+4%+0%+5%+3%
CLE100%-8%-36%+5%-2%+5%+0%
COL100%+7%+36%+2%+17%-14%-3%
DET100%-4%+59%-7%+1%-7%-3%
HOU100%+11%+20%-4%-1%+4%-1%
KC100%-17%+22%+7%+4%-9%-1%
LAA100%0%-27%-4%-1%+1%-2%
LAD100%+10%-53%-3%-4%+4%-5%
MIA100%-19%+28%+1%-1%-1%-3%
MIL100%+11%-7%+3%-3%+5%+4%
MIN100%-7%-3%+5%+1%-3%+1%
NYM100%+10%-37%-6%-8%+8%+3%
NYY100%+15%-30%-11%+0%+3%+1%
OAK100%-8%+4%+1%-4%-2%-1%
PHI100%+19%-9%-2%+0%+3%-3%
PIT100%-20%-14%+4%+0%-8%-4%
SD100%-1%-10%-6%-7%+3%+9%
SEA100%+0%-24%-5%-6%+9%-2%
SF100%-24%+16%0%+0%-4%-2%
STL100%-16%-8%-2%-1%-6%-2%
TB100%-7%+21%-2%-4%+5%+0%
TEX100%+5%+27%+1%+5%-5%+2%
TOR100%+12%+16%+11%+1%+1%-1%
WAS100%+3%-24%-1%+2%-4%-4%

Left-Handed Batters

Team Weight HR 3B 2B Avg SO BB
ARI100%+1%+46%+6%+5%-5%0%
ATL100%-3%-16%0%0%+5%-1%
BAL100%+11%-30%-6%+1%-3%-3%
BOS100%-25%+21%+28%+8%-5%+0%
CHC100%-6%-3%-2%+1%+2%+1%
CHW100%+26%-14%-6%-2%+5%+7%
CIN100%+26%-31%-5%+0%+5%+0%
CLE100%+1%-33%+3%+1%-1%+1%
COL100%+11%+38%-4%+14%-13%-3%
DET100%-5%+60%-10%-1%-6%+1%
HOU100%+9%+26%-3%0%+3%-1%
KC100%-19%+15%+6%+6%-9%-3%
LAA100%-2%-27%-4%-2%+3%-4%
LAD100%+12%-47%-4%-3%+2%-4%
MIA100%-16%+42%-7%-4%-2%+2%
MIL100%+18%+1%-1%-1%+4%+4%
MIN100%-9%+12%-4%+1%-2%+3%
NYM100%+5%-32%-3%-7%+6%+3%
NYY100%+28%-45%-12%+0%+1%+7%
OAK100%-13%+14%+2%-3%-1%-2%
PHI100%+18%-5%-1%+0%+2%+2%
PIT100%-9%-20%+9%+1%-9%0%
SD100%-4%-24%+4%-5%+2%+2%
SEA100%-2%-37%-5%-6%+8%-4%
SF100%-28%+39%+4%-2%+1%-4%
STL100%-10%-17%-7%-2%-4%-3%
TB100%0%+27%-4%-3%+4%-1%
TEX100%+11%+32%-3%+5%-4%+2%
TOR100%+5%-8%+11%0%+4%-2%
WAS100%-3%-26%+6%+4%-6%-4%