Mets Roster Central: GO, JEFRY! GO, MATT!! GO, ... (checks notes)

A very important but infrequently told chapter in Mets history is the tale of the short but consequential tenure of Bing Devine as general manager.  Bing was gone by the time the 1969 Mets won the World Championship, but the team that claimed the title was largely his.  Bing's first season (1967) at the helm featured 54 players — a record that stood for decades — as he largely turned his roster over twice, in season, looking for players and combinations that would be helpful when this team was ready to compete.

Miracles will come, in some 1969 of the future, but as the 2026 Mets have not been hinting of a magical turn this summer, the work of a GM becomes reloading.  As the team prepares to sell off parts, and the can of miracles gets kicked down the road a stretch, should these things come to pass, management will be asked to still field a putative MLB team the last two months of the season, and to evaluate who might have a magic bean or two to add to that can.

Some of those figures appear below.

Transactions, 7/2/2026

COMING
Transferred from St. Lucie to Binghamton on Rehab Assignment	Added to 40-Player Roster and Assigned to Syracuse
Relief Pitchers
Dedniel Núñez	Jefry Yan
R/R DoB: 1996-06-05 High Level: MLB (2025)	L/L DoB: 1996-08-17 High Level: MLB (2026)

Rookie sensation of 2024 and UCL victim of 2025, Dedniel Núñez got back on the field in 11 months, as teams are willing to accelerate the recovery schedule a small amount for relievers, which kind of makes sense and kind of doesn't.

Steady Deddy gave up a run in an inning and two thirds in St. Lucie, but has yet to be touched in two innings with the Rumble Ponies.  If walk/strikeout ratios are something you use to measure a rehabbing pitcher's progress, he has fanned four and walked none in 3 2/3 innings, and 4/0 is irrational!

Fellow Dominican Jefry Yan is at the other end of the spectrum — a grizzled veteran of something like a dozen professional seasons in the stateside minors and abroad.  He was added last summer and retained this winter with little fanfare, but damned if they didn't do something to get the guy on the good foot.

The guy's ERA is the bottom line, and that sits at 3.38, which certainly seems serviceable.  But the real story here is that the guy has retired 24 guys and 21 of them have been on strikeouts and that is the sort of thing that makes a man stand up and say AMEN! — as does the report that Jefry is bringing 100-mph heat from the left side.

Adding a guy to the 40-Player Roster mid-season without promoting him to the big is certainly unusual, and as the maneuver comes at the top of the month, it suggests that the player had a opt-out clause if the team didn't rosterize him.  But keep your eyes open for him in coming weeks as opportunities arise.

No hurry on Dedniel, but the clock is certainly ticking on this Jefry Yan guy.

Transactions, 7/4/2026

GOING

Released

Infielders

Grae Kessinger

R/R DoB: 35667 High Level: MLB (2024)

Grae Kessinger, Houston Astro of 2023 and 2024, is a third generation MLB player — albeit indirectly, as he follows his grandfather Don Kessinger and uncle Keith Kessinger.  He spent the first seven or eight weeks of the season on the IL, and never quite caught up following a damaging hammy injury early in spring training.  But considering those bloodlines, and being the only Graeber in MLB history, one might be forgiven for wishing him the best at his next stop. 

Transactions, 7/5/2026

GOING	COMING
Demoted to Syracuse	Traded from DET for Cash, Assigned to Syracuse	Added to 40-Player Roster and Promoted from Syracuse
Relief Pitchers
Joey Gerber	Matt Seelinger	Guillo Zuñiga
R/R DoB: 1997-05-03 High Level: MLB (2026)	R/R DoB: 1995-04-19 High Level: AAA (2026)	R/R DoB: 1998-10-10 High Level: MLB (2024)

If you watched last night's game, you saw the debut of Guillo Zuñiga.  Gary pronounced the name with a straight N as zoo-NEE-gah, like actress Daphne Zuniga, instead of the zoon-YEE-gah pronunciation indicated by the tilde.  Anyhow, baseballreference.com says the latter is correct, and while we have faith in Gary Cohen getting his shit together, we can hardly afford a repeat of the jay-or-EESE debacle.

Anyhow Guillo, looked pretty sweet last night, sawing off bats at the handle and making a basket catch on a week popup.  He also looked like one big Colombian — putting the bedimpled Joey Gerber on notice (one hopes) that he will have to earn his way back to Flushing.

Also joining the swelling 40-Player Roster (calling it a "40-Man Roster" does not allow for room to believe a woman may one day play for the Mets) is Matt Seelinger.  Matt had been DFA'd by the Tigers and the Mets, rather than hope to grab him on the waiver wire, made a move and acquired him for cash money.  Matt is local boy several times over, born in the Long Island hamlet of Westbury, NY, graduating from W.T. Clarke High School in nearby Salisbury, and then going on to play four years for Farmingdale State College.  As Farmingdale has spent most of its history as a two-year community college, you can't come from a much more obscure stateside background to find yourself at the threshold of the bigs.

And yeah, this is the time of the year when the Mets are prone to add local figures and feel-good stories to give themselves some good press, and gain some good will from the credulous and gullible, but we at Mets Roster Central can't help ourselves. 

GO, MATT SEELINGER!!!

But wait ... there's more ... .

Transactions, 7/7/2026

GOING	GOING	GOING
Designated for Assignment	Designated for Assignment	Demoted to Syracuse
Relief Pitchers	Relief Pitchers	Infielders
Alex Carrillo	Guillo Zuñiga	Ronny Mauricio
R/R DoB: 1997-06-06 High Level: MLB (2025)	R/R DoB: 1998-10-10 High Level: MLB (2026)	S/R DoB: 2001-04-04 High Level: MLB (2026)
COMING	COMING	NEUTRAL
Promoted from Syracuse	Ended Rehab Assignment and Activated from IL	Transferred from Syracuse to Binghamton on Rehab Assignment
Relief Pitchers	Infielders	Outfielders
Matt Seelinger	Jorge Polanco	Luis Robert, Jr.
R/R DoB: 1995-04-19 High Level: AAA (2026)	S/R DoB: 1999-11-13 High Level: MLB (2026)	R/R DoB: 1997-08-03 High Level: MLB (2026)

As we went to press, there was an absolute busload of transactions announced — an absolute, packed commuter bus, too.  One of those flex jobs.

We knew we'd be seeling Seelinger sooner or later, and were prepared to celebrate, but regret to lose big ol' Guillo Zuñiga so quickly and hope it's not for good.  Overlooked in last nights crazy finale against the Braves is that Guillo was in a position to walk away with the win after Soto's dramatic ninth-inning homer, but by blowing the save, Devin Williams vultered away from him the chance to gain a win in his first — and possibly only — game as a Met.

Luis Robert, Jr.'s reassignment from Syracuse to Binghamton reads like a demotion, but it is more likely just about saving him a road trip.  The OrangeMets hit the road yesterday to start series in Norfolk (tonight's opener was rained out), while Bingo stayed more local with a trip to Hartford.

The big news, though, perhaps, is the return of Jorge Polanco.  While Polanco has been the target of a disproportionate amount of animus as the putative replacement for Pete Alonso at first, his slow start didn't help, and whatever you can hang on him regarding his persistent Achilles injury, that hasn't helped either.  But here he is back, and while he hasn't lit it up in his rehab assignments, he's a veteran who should adapt quickly to game speed, assuming he's in good enough condition to play at all.

It's 2026, anyhow.  They got machines to get you used to game-speed pitching.    

As we go to press a second time, the Mets are parading pitcher after pitcher against the Royals, and struggling to get outs.  Sooner or later, their newest pitcher will get the call.

GO, MATT SEELINGER!!!

Your 2026 New York Mets

	Starting Pitchers					Relief Pitchers
	Sean Manaea	Nolan McLean	Freddy Peralta	Christian Scott		Huascar Brazobán
	R/L DoB: 1992-02-01	R/R DoB: 2001-07-24	R/R DoB: 2996-06-04	R/R DoB: 1999-06-15		R/R DoB: 1989-10-15
Relief Pitchers
A.J. Minter	Cionel Pérez	Brooks Raley	Matt Seelinger	Kodai Senga	Austin Warren	Luke Weaver
L/L DoB: 1993-09-02	R/L DoB: 35176	L/L DoB: 1988-06-29	R/R DoB: 1995-04-19	L/R DoB: 1993-01-30	R/R DoB: 1996-02-05	R/R DoB: 1993-08-21
Relief Pitchers	Catchers		Infielders
Devin Williams	Francisco Alvarez	Luís Torrens	Bo Bichette	Brett Baty	Francisco Lindor	Jorge Polanco
R/R DoB: 1994-09-21	R/R DoB: 2001-11-01	R/R DoB: 1996-05-02	R/R DoB: 1998-03-05	L/R DoB: 1999-11-13	S/R DoB: 1993-11-14	S/R DoB: 1999-11-13
Infielders		Outfielders
Mark Vientos	Eric Wagaman	Carson Benge	A.J. Ewing	Juan Soto	Tyrone Taylor	Jared Young
R/R DoB: 1993-12-11	R/R DoB: 1997-08-14	L/R DoB: 2003-01-20	L/R DoB: 2004-08-10	L/L DoB: 1998-10-25	R/R DoB: 1994-01-22	L/R DoB: 1995-07-09

Also on 40-Player Roster

Starting Pitchers				Relief Pitchers
Clay Holmes	Tylor Megill	Zach Thornton	Jonah Tong	Daniel Duarte	Reed Garrett	Joey Gerber
R/R DoB: 1993-03-27	R/R DoB: 1995-07-28	L/L DoB: 2002-01-17	R/R DoB: 2003-06-19	R/R DoB: 1996-12-04	R/R DoB: 1993-01-02	R/R DoB: 1997-05-03
Relief Pitchers						Catchers
Justin Hagenman	Tobias Myers	Dedniel Núñez	Jonathan Pintaro	Dylan Ross	Jefry Yan	Hayden Senger
R/R DoB: 1996-10-07	R/R DoB: 1998-08-05	R/R DoB: 1996-06-05	R/R DoB: 1997-11-07	R/R DoB: 2000-09-01	L/L DoB: 35294	R/R DoB: 1997-04-03
Infielders		Outfielders
Ronny Mauricio	Marcus Semien	MJ Melendez	Nick Morabito	Jared Oliva	Luis Robert, Jr.
S/R DoB: 2001-04-04	R/R DoB: 1990-09-17	L/R DoB: 1993-11-29	R/R DoB: 2003-05-07	R/R DoB: 1995-11-27	R/R DoB: 1997-08-03

Designated for Assignment

Relief Pitchers		Relief Pitchers
Alex Carrillo	Guillo Zuñiga
R/R DoB: 1997-06-06	R/R DoB: 36078

Your Mets Coaching Staff

Interim Manager	Bench Coach	Pitching Coach	Hitting Coord.	Third Base Coach	First Base Coach	Bullpen Coach	Ass't Pitch. Coach
Andy Green	Kai Correa	Justin Willard	Jeff Albert	Tim Leiper	Gilbert Gomez	José Rosado	Dan McKinney
DoB: 1977-07-07	DoB: 1989-07-14	DoB: 1990-09-09	DoB: 1992-08-16	DoB: 1996-07-19	DoB: 1992-03-08	DoB: 1974-11-09	DoB: 1989-06-06
Hitting Coach	Strategy Coach	Catching Coach	Coaching Assistant	Bat'g Pract. Pitcher	Equip. Manager	Bullpen Catcher	Bullpen Catcher
Troy Snitker	Danny Barnes	J.P. Arencibia	Rafael Fernandez	Kevin Mahoney	Kevin Kierst	Eric Langill	Dave Racaniello
DoB: 1988-12-05	DoB: 1989-10021	DoB: 1986-01-05	DoB: 1988-08-03	DoB: 1987-05-11	DoB: 1964-07-09	DoB: 1979-04-09	DoB: 1978-06-03

Your Mets Training Staff

Director of Player Health	Head Athletic Trainer	Assistant Athletic Trainer	Recond. Coordinator	Recond. Therapist	Head Performance Coach	Assistant Performance Coach	Performance Coordinator	Soft Tissue Specialist
Brian Chicklo	Joseph Golia	Bryan Baca	Sean Bardanett	Josh Bickel	Dustin Clarke	Tanner Miracle	Jeremy Chiang	Hiroto Kawamura
DoB: 1972-07-17	DoB: 1978-??-??	DoB: Circa 1980	DoB: 1988-06-23	DoB: 1996-??-??	DoB: 1987-??-??	DoB: 1991-??-??	DoB: ????-??-??	DoB: 1962-07-19