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In the fourth inning of Thursday's game against the Dodgers, Mike Fiers accomplished a feat that is rare in baseball history. He struck out the side on nine pitches, which is known as an "immaculate inning" in baseball. According to Baseball-Almanac.com, it is the 79th time in the history of MLB that an immaculate inning has happened, and is the first one in 2015. The feat occurred six times last season, the last by Brandon McCarthy on September 17. In addition, it is the fourth time a Brewers pitcher has accomplished the feat:
| Pitcher | Date | Opponent | Inning | Struck Out |
| Doug Jones | 9/23/1997 | Kansas City | 9th | Johnny Damon, Scott Cooper, Rod Myers |
| Ben Sheets | 6/13/2004 | Houston | 3rd | Pete Munro, Craig Biggio, José Vizcaíno |
| Rick Helling | 6/20/2006 | Detroit | 1st | Curtis Granderson, Plácido Polanco, Iván Rodríguez |
| Mike Fiers | 5/7/2015 | LA Dodgers | 4th | Enrique Hernández, Carlos Frías, Joc Pederson |
Fiers would end up pitching five innings in the game, allowing five runs, five hits, five walks, and eight strikeouts. He threw 89 pitches, 46 for strikes, before being removed in the top of the sixth inning.
Here is a video of the feat from today's game.