Marlins release Leo Jimenez after 66-game stint following mid-season acquisition

What happened

The Miami Marlins have released infielder Leo Jimenez, per his MLB.com transactions log, as first reported by Charlie Wright of MLB Trade Rumors. The move follows Jimenez's designation for assignment on Thursday, which itself came alongside the recall of Deyvison De Los Santos, per an MLB.com beat reporter. Jimenez had been with Miami since shortly after Opening Day, when the club acquired him from the Toronto Blue Jays in exchange for infielder Dub Gleed and international bonus pool money.

Why it matters

The release is notable less for what it ends than for what it didn't have to be. Per Wright's reporting, Jimenez had not previously been outrighted in his career and remains well short of three years of big-league service time. Under those circumstances, the Marlins could have outrighted him to the minors without triggering his right to elect free agency. Instead, Miami chose the outright release — which, per the report, gives Jimenez a head start on finding another organization before minor-league free agency arrives at the end of the season.

That's a quiet act of organizational goodwill, or at least a pragmatic one. A player who was going to hit minor-league free agency anyway is now free to start those conversations in September rather than November. The Marlins, for their part, clear a roster spot without the procedural friction of an outright assignment.

Jimenez arrived in Miami after the Blue Jays had designated him for assignment heading into the regular season. The trade was a low-cost flier on a player with a well-documented minor-league track record for plate discipline — the kind of move a rebuilding club makes when the price is a depth infielder and some international pool money. The return, at least in terms of production, didn't quite materialize.

The numbers

Jimenez slashed .199/.306/.259 across 66 games with Miami. The batting average and slugging percentage are difficult to dress up, but the on-base percentage tells a more complicated story. Per Wright's reporting, Jimenez trimmed his strikeout rate to below 20% and boosted his walk rate to 9.3% this season — a genuine step forward in plate discipline that he had posted in the minors but hadn't previously replicated at the major-league level.

The gap between a .199 average and a .306 on-base percentage is, in its own way, a portrait of a player who can work a count and still struggle to do damage when he makes contact. Per the report, Jimenez had appeared in parts of three MLB seasons, was a league-average bat as a part-timer in 2024 with Toronto, and then struggled in a brief stint last year before the challenges at the plate continued into this season with Miami.

On the defensive side, Jimenez offered genuine versatility, logging time at all four infield positions. The majority of his starts in Miami came at third base, per Wright's reporting.

Where the club stands

The Marlins enter Sunday at 71-72 (.497), sitting third in the NL East, 13.5 games back of the division lead. In the Wild Card picture, Miami ranks sixth, 4.0 games relative to the cut line, and has dropped three straight. The upcoming schedule brings the Chicago Cubs to loanDepot park on Sunday, with Tyler Phillips lined up against Clay Holmes, followed by a two-game set against the New York Mets on Monday and Tuesday.

The roster context around this release has been active. A week removed from the September 1 expansion that allows clubs to carry 28 active players, the Marlins recalled Bradley Blalock and Pauley from Triple-A Jacksonville. Xavier Edwards was placed on the injured list with a sprained left thumb, with infielder Serna recalled in his place. Kyle Stowers has also exited a game with a hamstring injury, leaving his availability uncertain. The Jimenez release lands in the middle of a stretch where Miami has been actively reshaping its available depth.

What we don't know yet

### Could Jimenez catch on elsewhere before the end of the season?

Per Wright's reporting, the release is designed to give him that opportunity — minor-league free agency was already on the horizon, and the early release accelerates his timeline. Whether another organization picks him up before the season ends remains unconfirmed.

It's also worth noting that Jimenez's plate discipline improvement this year — the walk rate of 9.3% and the strikeout rate pulled back below the threshold he'd previously struggled to reach at the major-league level — is the kind of data point that tends to attract attention from clubs willing to bet on contact improvement following a walk-rate breakout. Whether that translates into a roster opportunity somewhere, and at what level, remains to be seen.

What to watch

The more immediate question for Miami is how the infield depth holds up through the final weeks of the season. With Edwards on the IL and Stowers' hamstring situation unresolved, the Marlins are navigating the September stretch with a roster that has seen meaningful turnover in a short window. De Los Santos' recall, which coincided with Jimenez's DFA, is the move to watch on the other side of this transaction — his role in the final weeks will say something about how Miami views its options at the position.

For Jimenez, the 25-year-old now enters a free-agent market — minor-league tier, for now — carrying a legitimate plate-discipline improvement as his calling card. The bat-to-ball questions remain, but the walk rate is real, and the defensive versatility across all four infield spots gives him a profile that tends to find a home somewhere. The Marlins moved on; the next chapter is his to write.