No rest day (B2B or doubleheader)
+18%
265 yes / 121 no · 77 HRs
Rested (2+ days off)
+15%
23 yes / 363 no · 77 HRs
First-pitch temperature > 78°F
+13%
62 yes / 307 no · 73 HRs
Opposing starter coming off >7 days rest
+12%
58 yes / 294 no · 69 HRs
Batting 3-4-5 in the order
+11%
159 yes / 228 no · 77 HRs
Summer game (Jun-Aug)
+10%
155 yes / 232 no · 77 HRs
Vs. high-xwOBA pitcher (xwOBA allowed > .340)
−10%
79 yes / 308 no · 77 HRs
≥2 career HRs vs this pitcher
−10%
3 yes / 384 no · 77 HRs
Vs. hittable pitcher (BAA > .260)
+8%
79 yes / 308 no · 77 HRs
3rd time through order vs starter
−8%
200 yes / 187 no · 77 HRs
Platoon advantage (LHB-vs-RHP or RHB-vs-LHP)
+7%
78 yes / 192 no · 52 HRs
Vs. high-contact-quality pitcher (avg EV allowed ≥ 89 mph)
−6%
178 yes / 209 no · 77 HRs
HR-friendly park (factor ≥ 1.10)
+5%
37 yes / 349 no · 77 HRs
Cold month (Apr / Sep / Oct)
neutral
112 yes / 275 no · 77 HRs
Vs. fastball-heavy pitcher (FB% ≥ 55%)
neutral
209 yes / 168 no · 73 HRs
Vs. fly-ball-prone pitcher (FB% allowed > 40%)
neutral
52 yes / 332 no · 76 HRs
Vs. short-leash starter (avg IP < 5.0)
neutral
149 yes / 233 no · 76 HRs
Opposing starter's recent FB velo down ≥1 mph
neutral
51 yes / 274 no · 63 HRs
Vs. pull-fly-ball-prone pitcher (>18%)
neutral
267 yes / 117 no · 76 HRs
Wind blowing out (≥10 mph, outdoor)
neutral
5 yes / 364 no · 73 HRs
Vs. low-whiff pitcher (whiff% < 22%)
neutral
0 yes / 0 no · 0 HRs
≥3 career HRs vs this pitcher
neutral
0 yes / 387 no · 77 HRs
Vs. barrel-prone pitcher (Barrel% allowed > 9%)
neutral
0 yes / 384 no · 76 HRs