Mets select Zack Short and recall Tobias Myers as Mark Vientos lands on IL

What happened

The New York Mets announced a cluster of roster moves, selecting the contract of infielder Zack Short and recalling right-hander Tobias Myers. To clear the corresponding 40-man and active-roster space, right-hander Dan Hammer was designated for assignment and infielder Mark Vientos was placed on the 10-day injured list with a right hand fracture, per the club announcement. MLB Trade Rumors had previously covered the Hammer DFA and the Vientos IL placement separately.

Why it matters

Vientos' absence is the operational headline. A right hand fracture removes him from the Mets' lineup with no timetable reported, and Short is the direct answer to that vacancy — at least in the near term. The 10-day IL sets a minimum absence, though the nature of a hand fracture means the actual timeline is an open question the club has not publicly addressed.

Short steps into a roster that needed a player capable of covering multiple infield positions. That is, historically, the job description he has been handed across his career, and teams have continued to hand it to him: per MLB Trade Rumors, he is in his sixth big league season and has accumulated 649 plate appearances at the major-league level. The sport has a long tradition of the versatile, glove-first reserve infielder — the kind of player whose value lives in the dugout's imagination more than the box score. Short has been filling that role for a while now.

The numbers

The offensive profile is not a secret. Per MLB Trade Rumors, Short has posted a .171/.271/.289 line across his 649 career plate appearances. That is a line that requires a fairly generous defensive imagination to justify a roster spot, and the publicly available defensive metrics, per the report, are not especially generous either.

At shortstop, across nearly 1,000 innings, Short has been credited with -11 Outs Above Average and Defensive Runs Saved that also point in an unfavorable direction, per MLB Trade Rumors. The third base numbers draw the same frown from both DRS and OAA, per the report. Second base is the one position where the metrics diverge: DRS is favorable there, while OAA has him described as a hair below par, per MLB Trade Rumors.

The report notes that teams presumably carry internal metrics that rank Short higher than the publicly available figures suggest — the evidence being that he has continued to receive opportunities as a glove-first option across six seasons. That is an inference the report makes carefully, and it is worth preserving: the internal valuation is presumed, not reported.

Where the club stands

The Mets enter this stretch of the schedule at 74-88 (.457), sitting 5th in the NL East, 20 games back in the division, and eliminated from both the division race and the Wild Card race, per the verified standings data. They are 14.0 games relative to the Wild Card cut line, ranked 10th in that race. They arrive at this roster shuffle on a one-game losing streak.

The standings context matters for how you read a move like this. A club in a pennant race absorbing a hand fracture to a lineup contributor would be scrambling for offensive replacement. A club that has been eliminated from both races is, more honestly, managing a roster through the remainder of a long summer — and a versatile, light-hitting infielder who can cover multiple positions is a reasonable piece of that puzzle, whatever the metrics say about his glove.

At 74-88, the remaining schedule is about development, evaluation, and finishing with some professional dignity. The upcoming home series against the Boston Red Sox — Friday through Sunday at Citi Field — features Nolan McLean, Freddy Peralta, and Zac Thornton lined up as probable starters for New York, against Sonny Gray, Eduardo Rivera, and Payton Tolle for Boston. It is a series being played in the context of a season that has already been decided in the standings, which gives the roster decisions around it a different texture than they would carry in April.

What we don't know yet

The Vientos timeline is the most significant open question. A right hand fracture carries a wide range of possible absences, and the club has not reported a return target. The 10-day IL is the floor; what sits above it is unspecified.

The Hammer DFA also has a clock on it. Under general league roster mechanics, a player designated for assignment must be traded, released, or placed on waivers within seven days, with outright waivers running 48 hours after that. What happens to Hammer — whether he clears waivers, is traded, or is released — has not been reported.

Short's role going forward is also worth watching. The report frames him as a glove-first reserve, but with Vientos out, he may see more regular playing time than that framing implies. Whether the Mets view this as a strict placeholder situation or something with a longer runway is not addressed in the announcement.

What to watch

The Vientos injury is the thread to pull. Any update on the fracture's severity or a return window would reshape how the Mets manage the infield for the rest of the season. Short's playing time over the next week will also be a practical indicator of how the club is thinking about the position in Vientos' absence.

The Hammer DFA resolution will close out the other open transaction. And Myers' return to the active roster adds a piece to a pitching staff that will be working through a three-game home series against Boston starting Friday, with McLean, Peralta, and Thornton lined up as the probable starters.

For a team playing out the string at 74-88, the moves are less about October and more about keeping a functional roster on the field through the end of the summer. Short has been doing exactly that for six seasons across the league. The Mets are the latest club to ask him to do it again.