Ketel Marte placed on restricted list after failing to appear at Fenway Park
The Diamondbacks placed second baseman Ketel Marte on the restricted list just before first pitch Monday in Boston after he did not show up to Fenway Park, per MLB Trade Rumors.

What happened
The Arizona Diamondbacks placed second baseman Ketel Marte on the restricted list just before first pitch Monday night in Boston, after Marte failed to appear at Fenway Park despite having traveled with the club, per MLB Trade Rumors. The team recalled infielder Jose Fernandez from Triple-A Reno to fill the roster spot.
Nick Piecoro of The Arizona Republic reported that Marte made the trip to Boston with the team but did not show up to the ballpark. Steve Gilbert of MLB.com reported that the Diamondbacks waited until game time hoping Marte would arrive before ultimately placing him on the restricted list. The club has not publicly commented on the situation.
Marte had been slated to serve as the designated hitter, per Piecoro. With that spot suddenly open, Lars Nootbaar drew the DH assignment — though at the bottom of the lineup, with Boston deploying a left-handed opener ahead of starter Brayan Bello.
Why it matters
The restricted list is a distinct roster category from the injured list or a standard transaction. A player placed on the restricted list does not count against the active roster, which is how the Diamondbacks were able to recall Fernandez without a corresponding 40-man move — but the circumstances that land a player there are typically personal or administrative rather than physical. The club's silence makes the nature of the situation unclear, and nothing in the available reporting characterizes what prompted Marte's absence.
What is clear is the operational disruption. Marte is Arizona's starting second baseman and one of the more prominent bats in the lineup. A no-show at first pitch, on the road, against a major-league opponent, is not the kind of thing a coaching staff pencils into the pregame plan. The Diamondbacks had to scramble through the final moments before game time, and the roster move itself was not made until the situation became unavoidable.
The timing compounds an already complicated evening. Nolan Arenado is day-to-day with a torso injury and was not in the lineup Monday. Per the reporting, Arenado might require a stint on the injured list — which, if it comes to pass, would represent a separate roster challenge layered on top of the Marte situation. Fernandez, who had been with the team on the taxi squad specifically because of Arenado's status, slid directly into the hot corner once the recall was processed.
The makeshift infield Monday featured Fernandez at third alongside Ildemaro Vargas and Tim Tawa — a configuration that reflects just how quickly the evening unraveled before the first pitch was thrown. Fernandez had been on the taxi squad, not the active roster, when the night began. By the time the lineup card was set, the Diamondbacks were working with a considerably different group than the one they had planned around.
The numbers
The Diamondbacks enter this series at 76-68 (.528), sitting second in the NL West, 10.5 games back of the division leader, and riding a two-game winning streak. Those are the standings the club is trying to protect while navigating a road trip that just got considerably more complicated.
Where the club stands
### Is this a one-night problem or something longer?
That is the question the Diamondbacks cannot yet answer publicly. The restricted list carries no fixed minimum duration the way the injured list does, and the club has offered no timetable or explanation. Until Arizona says something, the duration of Marte's absence is genuinely unknown.
What the schedule does not offer is breathing room. The Diamondbacks play Tuesday at Fenway with Merrill Kelly lined up against Ranger Suarez, then close the series Wednesday with Brandon Pfaadt facing Payton Tolle. Three games in Boston, and the club is navigating them without its starting second baseman and with its third baseman listed as day-to-day.
At 76-68 and 10.5 games out of first in the NL West, Arizona is in the thick of a wild-card race where every game carries weight. A two-game winning streak is a fine thing to carry into Fenway, but the club would presumably prefer to carry its full complement of regulars as well. The Diamondbacks are not in a position where they can absorb prolonged absences from multiple regulars without the roster math becoming genuinely difficult.
What we don't know yet
The Diamondbacks have not publicly commented on why Marte did not appear at Fenway Park. The reporting from Piecoro and Gilbert establishes that he traveled with the team and that the club waited until game time for him to arrive — but nothing in the available material explains the circumstances behind his absence.
It is also unclear how long Marte will remain on the restricted list. The situation is ongoing, and no timetable has been reported by either Piecoro or Gilbert.
Separately, Arenado's status beyond Monday is unresolved. The reporting characterizes him as day-to-day with a torso injury and notes that an injured list stint is possible — but that has not been announced, and day-to-day is the operative designation as of this report. The two situations are distinct, but they are landing on the same roster at the same time, which is the part that matters operationally.
What to watch
The most immediate question is whether the Diamondbacks say anything before Tuesday's game. A club that waited until first pitch to make the roster move and has not commented since is not one that appears eager to get ahead of the story — but a series in Boston, with two more games to play, creates natural pressure points for an update.
Arenado's trajectory is the secondary thread. If he does go to the injured list, Arizona would need another roster move, and Fernandez — already on the active roster after Monday's recall — would presumably remain the primary option at third base for the duration. The taxi squad that provided some flexibility at the start of the series is now thinner than it was.
The broader competitive picture is worth keeping in mind. The Diamondbacks are 76-68, on a two-game winning streak, and trying to stay relevant in a wild-card race. An unexplained absence from a key regular, with no timetable attached and no comment from the club, is the kind of development that can reshape a roster's September calculus in ways that are difficult to anticipate from the outside. For now, the desk watches and waits alongside everyone else.
More on the Diamondbacks wire.

Jesús Sánchez outrighted to Triple-A Reno after clearing waivers; free agency expected
Arizona outrighted Jesús Sánchez to Triple-A Reno after he cleared waivers, per the club's transaction log at MLB.com; he is expected to elect free agency.

Burnes Shoulder Fatigue Not Surgical, Rest Expected to Resolve Issue
The Diamondbacks ace dealt with shoulder inflammation late in 2026 but says it's fatigue, not a new injury, and surgery appears unlikely.

Moreno scratched from Arizona's final game of the season
The NL's leading hitter sat out the D-backs' season finale, raising questions about his health heading into the offseason.

Diamondbacks designate Jesus Sanchez for assignment, call up Adrian Del Castillo
Arizona designated outfielder Jesus Sanchez for assignment and called up catcher Adrian Del Castillo from Triple-A, with Gabriel Moreno's tender hamstring driving the move.

Gabriel Moreno exits D-backs game with tender left hamstring
Arizona catcher Gabriel Moreno left a game early with a tender left hamstring, per MLB.com, raising availability questions late in a pivotal September series.

Corbin Burnes placed on IL with shoulder inflammation as Diamondbacks fight for wild card
Arizona placed Burnes on the 15-day IL retroactive to Sept. 22, leaving Saturday's start uncovered with the club two games back of the final wild card spot.
