Marlins Lean on Strikeout-Heavy Relievers as IL Roster Crunch Forces Early Callups

The Marlins called up right-handers Zach Brzykcy and Tyler Zuber from Triple-A Jacksonville on Monday, moving to address immediate bullpen need created by long-term injuries to Andrew Nardi and Griffin Conine, both of whom landed on the 60-day injured list. The dual callup forced Miami to option Josh White and place Josh Ekness on the 15-day IL with a calf strain—a cascade of transactions that reveals how thin the roster depth sits at a critical juncture of the season.

Brzykcy and Zuber share a defining trait: elite strikeout rates in the minors paired with alarming walk totals and discouraging big league résumés. Brzykcy, 26, carries a 10.05 ERA across parts of two seasons with Washington, his original organization. In 22 1/3 innings this season at Jacksonville, he posted 18 strikeouts against eight walks and yielded just one run through his first 15 1/3 innings—a stretch that masks a sharper deterioration in his last two outings, where nine of his 13 earned runs came in rapid succession. Zuber's major league presence across four seasons sits at a 6.26 ERA in 64 2/3 innings, though his Triple-A numbers this year jump to a 33.9% strikeout rate over 27 2/3 innings. His fastball velocity remains pedestrian, but he's offset that weakness by throwing his slider at extreme levels (57.2% usage in Triple-A), generating consistent swing-and-miss.

The underlying mechanics matter for relief evaluation. Both arms live by the strikeout or die by the walk—Zuber's 12.6% walk rate and Brzykcy's recent control issues suggest Miami is betting that high-velocity swing-and-miss stuff will translate on an elevated stage. Neither has demonstrated the ability to sustain that translation in the majors. The Marlins bullpen now carries elevated variance: Brzykcy and Zuber can rack up strikeouts in short stints, but their inability to command consistently means elevated home-run and walk rates are baked into their profiles.

For prop bettors, this shapes Marlins pitcher strikeout props in two directions. In games where Brzykcy or Zuber enter low-leverage situations early—which their minor league pedigree suggests will happen—strikeout totals on individual relievers could spike on volume alone. However, their walk rates mean innings pitched will likely be limited; a high K total paired with short appearance risk creates marginal value on single-inning props. More relevant is the Marlins team total under. A bullpen reliant on two unproven arms with walk rates above 12% invites baserunner accumulation and elevated opponent scoring risk. Washington's lineup, facing Brzykcy specifically (his former team), carries familiarity advantage. The under on Marlins run total holds structural appeal over the next two weeks until Nardi or Conine return.