The Philadelphia Phillies allowed the most home runs by a team in the 9th inning in 2021, with 30 HR.
| TEAM | HR | SEASON | G | W% | W | L | SO | H | BB | HBP | IBB | K/BB | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Phillies | 30 | 2021 | 118 | .640 | 332 | 187 | 126 | 120 | 51 | 6 | 2 | 2.47 |
| 2 |  | Nationals | 23 | 2021 | 110 | .509 | 245 | 236 | 97 | 109 | 51 | 9 | 8 | 1.90 |
| 3 |  | Yankees | 23 | 2021 | 129 | .646 | 343 | 188 | 168 | 101 | 56 | 7 | 2 | 3.00 |
| 4 |  | Twins | 21 | 2021 | 116 | .579 | 285 | 207 | 115 | 118 | 31 | 5 | 1 | 3.71 |
| 5 |  | Astros | 19 | 2021 | 132 | .691 | 364 | 163 | 146 | 107 | 45 | 1 | 1 | 3.24 |
| 6 |  | Reds | 18 | 2021 | 124 | .631 | 335 | 196 | 138 | 101 | 63 | 8 | 4 | 2.19 |
| 7 |  | Tigers | 18 | 2021 | 116 | .595 | 300 | 204 | 122 | 98 | 61 | 6 | 1 | 2.00 |
| 8 |  | Braves | 17 | 2021 | 123 | .681 | 350 | 164 | 136 | 100 | 50 | 6 | 4 | 2.72 |
| 9 |  | Angels | 17 | 2021 | 116 | .625 | 295 | 177 | 135 | 86 | 37 | 4 | 1 | 3.65 |
| 10 |  | Diamondbacks | 16 | 2021 | 108 | .452 | 210 | 255 | 92 | 118 | 36 | 6 | 3 | 2.56 |
| 11 |  | White Sox | 16 | 2021 | 115 | .700 | 326 | 140 | 151 | 95 | 31 | 5 | 3 | 4.87 |
| 12 |  | Royals | 16 | 2021 | 119 | .564 | 274 | 212 | 117 | 104 | 46 | 3 | 5 | 2.54 |
| 13 |  | Rockies | 16 | 2021 | 106 | .665 | 311 | 157 | 110 | 105 | 51 | 8 | 3 | 2.16 |
| 14 |  | Red Sox | 15 | 2021 | 120 | .727 | 376 | 141 | 156 | 109 | 50 | 7 | 5 | 3.12 |
| 15 |  | Blue Jays | 15 | 2021 | 115 | .667 | 321 | 160 | 137 | 83 | 56 | 7 | 2 | 2.45 |
| 16 |  | Marlins | 15 | 2021 | 117 | .541 | 264 | 224 | 122 | 101 | 45 | 9 | 9 | 2.71 |
| 17 |  | Rangers | 14 | 2021 | 113 | .522 | 238 | 218 | 100 | 92 | 33 | 1 | 1 | 3.03 |
| 18 |  | Giants | 14 | 2021 | 141 | .726 | 418 | 158 | 125 | 128 | 28 | 6 | 1 | 4.46 |
| 19 |  | Brewers | 14 | 2021 | 127 | .685 | 357 | 164 | 176 | 88 | 49 | 10 | 1 | 3.59 |
| 20 |  | Mariners | 14 | 2021 | 127 | .664 | 344 | 174 | 132 | 107 | 32 | 9 | 4 | 4.13 |
| 21 |  | Rays | 14 | 2021 | 139 | .695 | 386 | 169 | 141 | 103 | 45 | 6 | 5 | 3.13 |
| 22 |  | Dodgers | 13 | 2021 | 136 | .718 | 395 | 155 | 162 | 92 | 50 | 5 | 3 | 3.24 |
| 23 |  | Cardinals | 13 | 2021 | 123 | .674 | 352 | 170 | 129 | 102 | 55 | 7 | 3 | 2.35 |
| 24 |  | Indians | 12 | 2021 | 117 | .615 | 305 | 191 | 121 | 102 | 51 | 2 | 5 | 2.37 |
| 25 |  | Orioles | 12 | 2021 | 107 | .456 | 207 | 247 | 112 | 93 | 37 | 7 | 1 | 3.03 |
StatMuse has event-level data for home runs allowed going back to the 1974 season.
Some of the information used here was obtained free of charge from Retrosheet.
Phillies 
Mets 
Braves 
Nationals 
Marlins 
HOU 
Yankees 
Rays 
Tigers 
Royals 
Mariners 
Cubs 
Brewers 
Dodgers 
Giants 
PIT 
TEX 
BOS 
BAL 
MIN 
CIN 
STL 
