Diamondbacks place Ketel Marte on restricted list ahead of Red Sox series opener

The Arizona Diamondbacks announced that second baseman Ketel Marte has been placed on the restricted list, a move that immediately affected the team’s ability to set its lineup in time for Monday night’s series opener against the Boston Red Sox.

According to the team’s release, the decision came after the Diamondbacks had not yet posted a lineup roughly 20 minutes before the start of the game. Not long after that delay, it became clear why: Marte was listed as restricted, leaving Arizona to adjust its infield plans for the first game of the set.

A restricted-list placement is generally used in MLB when a club needs roster flexibility for reasons that can vary from day to day. While the specifics are not provided here beyond the assignment itself, the practical effect is the same for the short term. Marte is not part of the group listed for game action at first pitch, and Arizona must manage his absence with its remaining position players.

For the Diamondbacks, Marte’s role has been more than just a regular in the middle of the order. As the established second baseman, his availability normally stabilizes the team’s everyday defensive alignment and helps define how Arizona maps out at-bats and lineup protection around him.

With Marte restricted for Monday, Arizona’s infield depth and lineup construction come under scrutiny. The team will have to decide whether to shift a utility option into the second-base spot, move another player across the dirt, or reconfigure the lineup’s batting order to accommodate a different mix of hitters.

The timing of the move also matters. Coming as late as an hour close to the first pitch and tied to the lineup not being posted yet, it suggests the Diamondbacks did not want to finalize game plans until the roster status was formally updated. For opponents, that delay can change pregame routines as well, since infield matchups, batting-order expectations, and defensive looks are typically finalized in the window before first pitch.

Looking ahead, Arizona’s next step is straightforward: how quickly Marte’s status changes. If he remains restricted beyond this opener, the Diamondbacks will need to sustain the adjustment across additional games, which can ripple through pitching usage, lineup consistency, and in-game substitutions. If the restriction is lifted, Arizona would regain its regular second-base presence and a more familiar lineup rhythm.

For now, the storyline is simple but significant for the matchup in Boston. The Diamondbacks entered the series with a key infield piece held back, forcing them to play Monday’s game without Marte and giving the Red Sox an immediate roster-related edge through lineup certainty.