Mack went 1-for-3 with a grand slam in the Marlins' Grapefruit League game against the Phillies on Tuesday.

The fifth-inning blast came off minor-league pitcher Andrew Walling, but it was still a statement of intent from Mack that he's not interested in heading back to Triple-A Jacksonville to begin the season. The top catching prospect slashed .252/.323/.463 in 98 games last year with the Jumbo Shrimp, slugging 18 homers, and his defense looks ready for the majors already, although he was charged with a throwing error on a pickoff attempt Tuesday. Mack's biggest hurdle to a spot on the 26-man roster is the fact that Agustin Ramirez and Liam Hicks are ahead of him on the depth chart, but Ramirez still has a lot of work to do on defense to prove he's capable of sticking behind the plate long term. A rough start to 2026 with the glove for the 24-year-old could open the door for Mack to make his MLB debut early in the season.

Cardinals manager Oliver Marmol said Thursday that Herrera (elbow) will make his first Grapefruit League start at catcher Sunday, Daniel Guerrero of the St. Louis Post-Dispatch reports.

Herrera is making his spring training debut Thursday at designated hitter, and he will be behind the plate this weekend. The 25-year-old was limited to designated hitter for the final few months of last season due to bone spurs that he had surgically removed from his elbow in November. Herrera is attempting to return to catcher this season, though it's unlikely he will be used on a full-time basis at the position.

Herrera (elbow) will make his Grapefruit League debut Thursday at designated hitter, Jeff Jones of the Belleville News-Democrat reports.

Herrera has been slow-played by the Cardinals this spring after having surgery in November to remove bone spurs from his right elbow. While he is ready to go with the bat, it's uncertain when he will be cleared to catch in games. Herrera is attempting to return to catcher after the elbow issue and defensive concerns limited him to designated hitter for the final few months of last season.

Pozo drew a start at first base in Tuesday's game against the Nationals, Daniel Guerrero of the St. Louis Post-Dispatch reports.

Pozo got one start at first base for the Cardinals last season and has played there a decent amount in the minors. Proving he could be a backup to Alec Burleson at the position would give him a better chance to make the Opening Day roster, as the Cardinals have a crowded depth chart at catcher.

Raleigh went 2-for-4 with a walk and a two-run homer in Tuesday's Cactus League game against the White Sox.

Raleigh tied the game 3-3 in the third inning with a 427-foot blast off Wikelman Gonzalez, his first homer of the spring. Raleigh is looking to build on a historic 2025, when he posted a .948 OPS with 60 home runs across 705 regular-season plate appearances, ultimately finishing second to Aaron Judge in the MVP race. Raleigh should see regular at-bats with the Mariners early in the spring before reporting to Team USA for the World Baseball Classic.

Feduccia went 1-for-3 with a three-run home run in Tuesday's Grapefruit League game against the Twins.

The Rays have a fairly open competition for the top catcher gig ahead of the regular season, though the expectation for now is that the righty-hitting Nick Fortes will handle the primary spot to start the new year. That said, it's not out of the question that the lefty-hitting Feduccia could eventually carve out a strong-side platoon role behind the plate if he outperforms Fortes during spring training.

Dingler (elbow) is working through a return-to-play throwing progression this week and is expected to be ready to return in early March, MLB.com reports.

Dingler underwent arthroscopic surgery on his right elbow at the end of January and has been working his way back in recent weeks. He has been taking part in all other baseball activities, and now his throwing seems to be nearly back to normal as well. With more than a month to go until Opening Day, Dingler doesn't seem to be in any danger of missing regular-season contests, and he should be Detroit's clear top catcher after a strong 2025 campaign.

Kelly went 2-for-3 with a home run and two RBI in Tuesday's Cactus League game against the Padres.

Kelly connected in the fifth inning for his first home run of the exhibition slate. The veteran catcher got off to a scorching hot start in 2025 before eventually cooling off, but he still finished with a respectable .761 OPS and 17 home runs across 111 regular-season games. Heading into 2026, Kelly should be Chicago's top backstop again with Miguel Amaya serving in a complementary role. Amaya dealt with a myriad of injuries last year and could push for a larger chunk of playing time this season if he stays healthy, which would allow Kelly to stay fresher but might reduce his fantasy ceiling.

Diaz (foot) will be the designated hitter Wednesday and will start at catcher in Friday's Grapefruit League game, Matt Kawahara of the Houston Chronicle reports.

Diaz was delayed due to a foot sprain suffered in the Dominican Winter League, but he isn't too far behind, as he's scheduled to catch in a game before the end of February. Cesar Salazar is Diaz's only backup, so there should be ample playing time available for the latter once he puts the foot sprain behind him.

Red Sox manager Alex Cora said Tuesday that Seigler is nursing a knee injury that he first suffered in the Dominican Winter League, Mac Cerullo of the Boston Herald reports.

Seigler felt fine at the beginning of camp, but now the knee is barking again. It's not clear whether he will be sent for testing or will simply rest for a bit. Acquired from the Brewers in a trade this offseason, Seigler is competing for a reserve role with the Red Sox.