Between the 2010 and 2019 seasons, the Baltimore Orioles gave up the most home runs by a team in the 1st inning, with 273 HR.
| TEAM | HR | G | W% | W | L | SO | H | BB | HBP | IBB | K/BB | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Orioles | 273 | 1,620 | .438 | 3,105 | 3,978 | 1,288 | 1,749 | 604 | 52 | 3 | 2.13 |
| 2 |  | Mariners | 261 | 1,620 | .437 | 3,035 | 3,918 | 1,347 | 1,665 | 533 | 49 | 3 | 2.53 |
| 3 |  | Rockies | 254 | 1,621 | .436 | 3,132 | 4,056 | 1,262 | 1,859 | 633 | 54 | 20 | 1.99 |
| 4 |  | Yankees | 242 | 1,620 | .537 | 3,722 | 3,215 | 1,500 | 1,677 | 492 | 58 | 2 | 3.05 |
| 5 |  | Reds | 232 | 1,620 | .449 | 3,158 | 3,874 | 1,409 | 1,658 | 604 | 77 | 19 | 2.33 |
| 6 |  | Rangers | 229 | 1,621 | .493 | 3,434 | 3,538 | 1,295 | 1,615 | 621 | 59 | 4 | 2.09 |
| 7 |  | Phillies | 226 | 1,620 | .460 | 3,247 | 3,805 | 1,374 | 1,748 | 535 | 85 | 5 | 2.57 |
| 8 |  | Angels | 222 | 1,620 | .478 | 3,269 | 3,566 | 1,409 | 1,521 | 582 | 63 | 9 | 2.42 |
| 9 |  | White Sox | 218 | 1,619 | .422 | 2,983 | 4,084 | 1,387 | 1,708 | 646 | 59 | 9 | 2.15 |
| 10 |  | Brewers | 217 | 1,621 | .479 | 3,347 | 3,644 | 1,343 | 1,633 | 620 | 66 | 6 | 2.17 |
| 11 |  | Royals | 216 | 1,620 | .436 | 3,071 | 3,975 | 1,275 | 1,736 | 569 | 75 | 8 | 2.24 |
| 12 |  | Tigers | 211 | 1,617 | .455 | 3,120 | 3,740 | 1,363 | 1,608 | 546 | 51 | 1 | 2.50 |
| 13 |  | Cubs | 209 | 1,621 | .474 | 3,365 | 3,736 | 1,470 | 1,644 | 682 | 82 | 14 | 2.16 |
| 14 |  | Twins | 208 | 1,620 | .446 | 3,108 | 3,853 | 1,166 | 1,702 | 550 | 53 | 2 | 2.12 |
| 15 |  | Dodgers | 206 | 1,620 | .535 | 3,661 | 3,177 | 1,483 | 1,559 | 524 | 54 | 12 | 2.83 |
| 16 |  | Mets | 205 | 1,620 | .460 | 3,163 | 3,719 | 1,489 | 1,618 | 518 | 45 | 12 | 2.87 |
| 17 |  | Giants | 203 | 1,620 | .476 | 3,299 | 3,633 | 1,367 | 1,600 | 605 | 59 | 12 | 2.26 |
| 18 |  | Padres | 202 | 1,620 | .430 | 3,043 | 4,036 | 1,363 | 1,699 | 638 | 57 | 9 | 2.14 |
| 19 |  | Diamondbacks | 201 | 1,620 | .464 | 3,256 | 3,760 | 1,393 | 1,694 | 605 | 59 | 5 | 2.30 |
| 20 |  | Red Sox | 200 | 1,620 | .521 | 3,646 | 3,355 | 1,509 | 1,625 | 621 | 66 | 1 | 2.43 |
| 21 |  | Pirates | 197 | 1,619 | .459 | 3,275 | 3,867 | 1,340 | 1,740 | 666 | 82 | 13 | 2.01 |
| 22 |  | Astros | 195 | 1,620 | .455 | 3,170 | 3,800 | 1,450 | 1,591 | 632 | 50 | 8 | 2.29 |
| 23 |  | Indians | 194 | 1,618 | .496 | 3,397 | 3,458 | 1,463 | 1,587 | 540 | 56 | 9 | 2.71 |
| 24 |  | Marlins | 194 | 1,618 | .411 | 2,883 | 4,133 | 1,252 | 1,675 | 633 | 66 | 9 | 1.98 |
| 25 |  | Braves | 193 | 1,619 | .495 | 3,422 | 3,495 | 1,339 | 1,585 | 599 | 63 | 17 | 2.24 |
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.
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