Cubs acquire RHP Yosver Zulueta from Mariners for minor leaguer and cash

What happened

Both the Chicago Cubs and Seattle Mariners have announced the acquisition of right-hander Yosver Zulueta, with Seattle receiving a minor leaguer and cash considerations in return. To clear the necessary 40-man roster space, Chicago designated left-hander Doug Nikhazy for assignment in a corresponding move.

Reporter Francys Romero had reported the deal earlier in the morning, noting that Seattle had designated Zulueta for assignment earlier in the week and that an additional transaction would be required to open a 40-man spot — a condition now satisfied by the Nikhazy designation. The clubs subsequently announced the deal officially.

Why it matters

Zulueta's route to Wrigley Field is, to put it charitably, scenic. He was originally an international signing for the Toronto Blue Jays in 2019. From there, he moved to Cincinnati via a waiver claim in March 2024, which produced his MLB debut. His time with the Reds stretched across the 2024-25 seasons before Cincinnati designated him this past January. The Mariners then worked out a trade to bring him to Seattle — and now, following another designation for assignment, Chicago has done the same.

That makes this the third time a designation for assignment has functioned as the gateway to Zulueta's next stop, a sequence that says something either about the volatility of the back end of major-league rosters or about the persistent belief, across multiple front offices, that the arm is worth another look. Probably both. Three organizations have now looked at a DFA on Zulueta and responded not with a release but with a trade call.

The corresponding Nikhazy designation carries its own operational weight. Under standard league roster mechanics, a player designated for assignment must be traded, released, or placed on outright waivers within seven days — so Nikhazy's situation will resolve on a short clock regardless of what Chicago might prefer. Whether another club claims him or he clears and is assigned outright is a secondary thread the next week will answer.

The numbers

Zulueta's major-league track record is limited but documented: a 5.32 ERA across 23 2/3 innings for Cincinnati, spread over the 2024-25 seasons. That is the full extent of his time at the big-league level as reported by MLB Trade Rumors, and it is the number the Cubs' front office was weighing when they agreed to part with a minor leaguer and cash considerations. The sample is small enough that the ERA functions more as a data point than a verdict — which is presumably how Chicago is reading it, too.

Where the club stands

The Cubs sit at 89-73 (.549), which places them 2nd in the NL Central. They have been eliminated from the division race, sitting 14 games back, so the more consequential ledger is the Wild Card standings, where Chicago ranks 2nd and holds a position +1.0 relative to the cut line. One game of cushion. The Cubs enter the week on a one-game winning streak.

Chicago is hosting the Colorado Rockies for a three-game set at Wrigley Field this week. Monday's probable matchup is Shota Imanaga against Michael Lorenzen. Tuesday lines up Edward Cabrera opposite Ryan Feltner. Wednesday closes the series with Javier Assad facing Sean Sullivan.

A bullpen addition — even one still establishing himself at the major-league level — is not an incidental piece for a club holding a Wild Card berth by a single game over the cut line. The 40-man roster move has been made, which is the prerequisite for any call-up under standard roster mechanics. Whether Zulueta moves directly to the active roster or is placed elsewhere in the organization first is not addressed in the reporting.

What we don't know yet

The minor leaguer headed to Seattle has not been identified per MLB Trade Rumors. That portion of the return remains unnamed as of the announcement.

It is also not yet clear whether Zulueta will be added to Chicago's active roster immediately or whether he will spend time in the minors first. The reporting establishes the trade and the 40-man move; it does not specify a timeline for his availability or a projected role within the pitching staff.

What to watch

The most immediate follow-up question is whether Zulueta appears in a Cubs uniform during this Rockies series. The 40-man spot is now open, but a corresponding active-roster move has not been reported. A 26-man transaction, if one is coming, would be the next piece to watch — and given the Wild Card margin, the timing of that decision carries more weight than a typical mid-roster shuffle might.

Beyond the immediate availability question, his role is worth monitoring. His major-league experience amounts to 23 2/3 innings, and a 5.32 ERA with Cincinnati does not position him for high-leverage work out of the gate. But a club protecting a one-game Wild Card margin through the remainder of the schedule has reason to add right-handed arms with upside, however unproven, and that appears to be the calculation here — the same calculation, it should be noted, that Seattle made when it traded for him earlier this year.

The Nikhazy designation also starts a seven-day clock. Whether another club claims the left-hander on waivers or he clears and is assigned outright is a secondary thread worth following in the days ahead.

For now, both clubs have announced the deal, the 40-man is balanced, and Yosver Zulueta — who has now been designated for assignment three times and changed teams twice via trade following a DFA, per MLB Trade Rumors — is reportedly headed to Chicago.