For a Brewers franchise that has had some legendary first basemen in its history (Cecil Cooper, Prince Fielder, Richie Sexson), first base has been more of a hodgepodge in the last six seasons, featuring four different starters, each of whom posted a negative Wins Above Replacement (WAR) at least once, according to Baseball Reference. No primary starter has posted a WAR above 1.5 since Jesús Aguilar in 2018.

Can that change in 2026? Let’s take a look.

2025 Review
Rhys Hoskins, Andrew Vaughn, and Jake Bauers combined to provide adequate production at first base over the 2025 season. Hoskins missed time with an injury and was then displaced by Vaughn, who was on a hot streak. But the Brewers have had a couple of players have hot streaks when they arrived, only to fade away, like Rowdy Tellez and the aforementioned Aguilar. Vaughn’s staying power as a slugger is a key question about the position entering 2026.

Current Roster Situation
Vaughn and Bauers could form a soft platoon at first base for Milwaukee, at least to start the 2026 season. Behind them, there is Andruw Monasterio, who handled first base for 15 games in 2025, and Tyler Black, a former top-100 prospect who could be more suited as a supersub. William Contreras could handle first base, in case Vaughn is injured or reverts to his form with the White Sox, especially if Jeferson Quero has an excellent spring and forces Milwaukee to call him up from Nashville.

In the upper minors, the Brewers will have Blake Burke and Luke Adams. The former, the team’s 2024 sandwich-round pick acquired in the Corbin Burnes trade, is a lefty masher, while the latter has split time between the hot corner and the cold, getting on base often both by drawing walks and joining the Caleb Durbin “plunk me” club, while still having a potent bat of his own. Third-base prospects Brock Wilken and Andrew Fischer could also slide across the infield.

Best-Case Scenario
For the Brewers, the best-case scenario would involve Vaughn getting the bulk (about 130) of the starts at first base, with the other 32 (give or take) going to either Bauers. This would indicate that Vaughn’s breakout in Milwaukee was for real and not just a hot streak, which also would have positive implications for the 2026-2027 offseason: the Brewers might be able to net a decent return by trading Vaughn. Recall that the Adam Lind deal worked out very nicely for Milwaukee.

Worst-Case Scenario
Andruw Monasterio gets more than 10 starts at first base. If this is happening, then the Brewers have had things go south, either on the injury front or because players have slumped, while prospects in the minors aren’t ready to step up, either.

Monasterio’s not an incompetent hitter, but his offensive ceiling is very limited. If he becomes the team’s best option, then expect the Brewers to make a sudden deal to bolster the position or elect to rush up a top prospect. Either way, it will not be a good situation.

Overview
First base can either go really well for the Brewers, or it can be a significant weakness on the team. Milwaukee’s faced both extremes over the last six years. There are also a lot of middle-case scenarios, which could include Contreras seeing time at the position (this would mark some good news at catcher regarding Quero’s development/health), Black getting a lot of starts (he won’t have the power of Vaughn or Bauers, but he can draw walks), or one of Burke, Adams, and Wilken forcing their way to Milwaukee with their performance.