The Nationals reassigned Knizner to Triple-A Rochester on Wednesday.

Knizner landed a minor-league contract with the Nationals on Jan. 17. That contract included an invitation to spring training, though he struggled to a .120/.214/.120 slash line across 28 plate appearances. Knizner will begin the 2025 regular season in Triple-A, but he could get a call-up to the majors if Keibert Ruiz or Riley Adams miss time.

Mets manager Carlos Mendoza said Wednesday that Alvarez had the stitches removed from his surgically repaired left hand Monday and will begin strengthening exercises, SNY.tv reports.

After Alvarez has regained the necessary strength in his hand, he will progress to baseball activities. Alvarez is a little over two weeks into a projected 6-to-8 week timetable for his return, so he could make it back before the end of April if everything goes well. In the meantime, Luis Torrens and Hayden Senger will handle the catching duties for the Mets.

The Mets informed Senger on Wednesday that he will be included on the Opening Day roster, Abbey Mastracco of the New York Daily News reports.

He will open the season as the Mets' backup catcher behind Luis Torrens while Francisco Alvarez (hand) is on the shelf. Senger will be making his major-league debut when/if he gets into a game.

The Reds placed Stephenson (oblique) on the 10-day injured list Wednesday.

Stephenson will be eligible for activation April 3, but it's unclear if he'll be ready to make his season debut by then while he continues to recover from a low-grade left oblique strain. He didn't appear in any Cactus League or exhibition games after suffering the injury in mid-March, so Stephenson will likely need at least a brief minor-league rehab assignment to pick up some at-bats before the Reds are comfortable bringing him back. In the meantime, Cincinnati will lean on Jose Trevino as its primary backstop, while Austin Wynns serves as the No. 2 option behind the dish.

The Reds selected Wynns' contract from Triple-A Louisville on Wednesday.

Wynns will open the season as the Reds' No. 2 catcher, with Jose Trevino serving as the primary starter behind the plate while Tyler Stephenson (oblique) is on the injured list. Once Stephenson is ready to be activated from the IL, Wynns will likely be cast off the 40-man roster.

Atlanta placed Murphy (ribs) on the 10-day injured list Monday.

Murphy was ruled out 4-to-6 weeks after suffering a fractured rib on his left side in early March, so the move to the IL is procedural. With the 30-year-old sidelined for the start of the season, prospect Drake Baldwin recently had his contract selected and is expected to begin the campaign as Atlanta's primary catcher.

Cardinals manager Oliver Marmol said Monday that he's planning to start Herrera at catcher and bat him sixth Opening Day versus the Twins, Derrick Goold of the St. Louis Post-Dispatch reports.

The lineup the Cardinals are using in Monday's exhibition tilt against Triple-A Memphis -- one that features Herrera behind the plate -- is the same one Marmol is eyeing for the opener. Herrera has been in a competition with Pedro Pages for the St. Louis catcher job, and it appears Herrera will get the first crack at it. What the ultimate breakdown in playing time between the two catchers will be over the duration of the season isn't clear.

Quero (shoulder) will start at designated hitter and bat second in a minor-league game with Double-A Biloxi on Monday.

After he underwent right shoulder surgery last April that limited him to just one game in 2024, Quero was eased into spring training. Quero didn't make any Cactus League appearances before the Brewers optioned him to Triple-A Nashville on March 10, but his ability to serve as a DH on Monday suggests that he'll be ready to go for the start of the minor-league season. It's unclear if Quero will be limited to DH-only duties initially, or if he'll be ready to make starts behind the plate.

The Padres optioned Campusano to Triple-A El Paso on Sunday.

Elias Diaz will be the Padres' primary catcher, and non-roster invitee Martin Maldonado is in line to serve as his backup. Campusano will head to El Paso, where he will receive regular playing time as he awaits another opportunity in the majors.

Stephenson (oblique) showed improvement after being examined by a team doctor Friday, Mark Sheldon of MLB.com reports.

Stephenson, who will open the regular season on the injured list, sustained a left oblique strain during spring training. He's been cleared to begin rotational exercises and is scheduled to undergo another MRI on Wednesday. If the MRI comes back clean, Stephenson can start doing additional exercises, which could include baseball activities. With Stephenson sidelined, Jose Trevino moves into the starting job at catcher with Austin Wynns serving as the backup, assuming the Reds don't add anyone from outside the organization in the coming days.