BREAKING: Brewers Trade Isaac Collins, Nick Mears to Kansas City Royals, Acquire Lefty Angel Zerpa

The Brewers have traded Isaac Collins and right-handed reliever Nick Mears to the Kansas City Royals for lefty reliever Angel Zerpa, according to multiple reports. Robert Murray of FanSided had the first report, on Twitter.

Despite spending a month or so as a favorite for the National League Rookie of the Year Award, Collins became just an extra piece again by the end of the season. He's a switch-hitter with average athleticism and a good approach at the plate, but the Brewers have toolsier options at every position he can credibly play. Mears, who is out of options and didn't fit into the top half of the Brewers' bullpen hierarchy for 2026, was on the roster bubble even when the non-tender deadline passed last month.

Zerpa, 26, offers the chance to turn two players who were redundant on Milwaukee's loaded roster into one who can be more of a standout. He comes with three years of team control and (unlike Mears) can be optioned to the minor leagues for one more season. When he first came up as a starter, his dead-zone fastball held him back, but a move to the bullpen and a new emphasis on his sinker instead of a four-seamer have reinvented him as a very good ground-ball lefty. He also added a tick of velocity in 2024, and nearly that much again in 2025, such that he now averages nearly 97 miles per hour with that sinker. Mechanical adjustments lent his slider more depth this season and offer some swing-and-miss upside into which he has not yet fully tapped. 

Days after signing an outfielder (Akil Baddoo, who now becomes the de facto replacement for Collins at the edge of the outfield picture) and filling their 40-man roster, the Brewers freed up a spot anew, and converted a reliever without much hope of pitching in high leverage or the roster flexibility of being able to be sent to the minors into one who has both of those things.

That said, this deal will draw raised eyebrows from some. The Brewers gave up multiple seasons of Collins at a league-minimum salary and an affordable (if fungible) righty reliever to add more depth to a department of the roster where they already appear to be strong: left-handed relief. Zerpa joins Jared Koenig, Aaron Ashby and DL Hall as candidates for the southpaw slots in next year's bullpen—unless the team intends to let Ashby and Hall try once more to show they can hold up and succeed as starting pitchers. That, in turn, invites plenty of questions about the shifting odds of a Freddy Peralta trade.

Meanwhile, though Collins's run of success at the plate already showed signs of being a flash in the pan, replacing him with Baddoo for 2026 isn't the act of a confident contender making the most of their outfield options. Indeed, this deal (while sensible on its own, given the way it consolidates the roster and what Zerpa appears to be capable of as a setup man) feels like the first of a few moves in a coordinated maneuver. Could a Peralta trade net a higher caliber of outfielder than Collins? Could it pave the way for a return to the rotation by Ashby, leaving the team in need of a lefty reliever? Do the Brewers have their eye on a free-agent outfielder who would have supplanted Collins anyway, and like that player better than any of the remaining options they had to improve their lefty relief depth via free agency?

For a small trade, this one feels momentous. Whether that's true will depend on what the team does next.