2. First Base
Earlier this season it didn't seem like we'd find first base very high on this list. Rowdy Tellez was performing at an All-Star level and the offense was clicking. Now, not only did Tellez hit a major sustained slump, he is on the IL until at least mid August while some previously planned backup options are either also injured (Darin Ruf) or no longer with the team (Luke Voit, Jon Singleton).
Brewers first basemen have a 75 wRC+, which is the second worst at that position in MLB. Owen Miller has been primarily filling in since Tellez went out, but he has cooled down since a hot start and is slashing just .194/.232/.274 in July.
Even with Tellez set to return, the Brewers could use some help at first base for the rest of the year. C.J. Cron of the Rockies and Carlos Santana of the Pirates are two of the better options out there, though the latter could cost an intra-division tax of sorts.
3. Third Base
Like at first, the Brewers got decent production at third base early on in 2023 as Brian Anderson was one of the more consistent offensive performers in the first month of the season. But like Tellez, he also both saw that production decrease and is currently on the injured list.
Meanwhile, the player who was supposed to share the most time with him, Luis Urias, is currently in Triple-A after an extremely slow start to 2023 that was exacerbated by injury (though he has started looking better as of late). Rookie Andruw Monasterio has held up decently, but doesn't exactly put up the type of numbers you'd like from a position like third base.
Justin Turner of the Red Sox (if they do indeed end up selling) hasn't played a ton of third base this season but would be a clear upgrade. Jeimer Candelario of the Nationals would be another great option, though he is one of the better trade targets available and will have plenty of suitors.