Del Castillo (calf) will begin a rehab assignment with Triple-A Albuquerque on Tuesday, Aaron Hughes of SI.com reports.

Del Castillo missed the entirety of Cactus League play with a strained left calf, so this is a big step in his recovery to see some game action. Del Castillo appeared in 44 regular-season games with the Diamondbacks last season and slashed .242/.290/.392 with four home runs, 17 RBI, nine runs scored and an 8:47 BB:K across 131 plate appearances.

Alvarez isn't in the lineup for Tuesday's game against the Cardinals.

Alvarez will grab a seat on the bench Tuesday after going 1-for-3 with a walk in Monday's series opener. Luis Torrens will catch instead for starter Kodai Senga while batting ninth.

Kelly is not in the lineup for Tuesday's game against the Angels.

Kelly has been behind the dish for three of the Cubs' first five games this season but will yield catching duties to Miguel Amaya on Tuesday. Amaya is in the nine spot in Chicago's lineup.

The Brewers optioned Quero to Triple-A Nashville on Tuesday.

He's being sent out to make room on the active roster for Luis Matos, who was acquired via trade. Quero logged two plate appearances during his first brief stint in the majors, drawing a walk and grounding out.

Herrera will start at catcher and bat second in Tuesday's contest against the Mets.

It's the second start at catcher this season for Herrera, leaving him eight games shy of gaining eligibility at the position if your league uses a 10-game in-season threshold. Herrera is off to a slow start offensively this season, going 2-for-17 with a double and two RBI.

Stephenson is absent from the lineup for Tuesday's contest versus the Pirates.

It's a routine day off for Stephenson, who has now started three of the Reds' first five tilts. Jose Trevino will do the catching and bat eighth for Cincinnati on Tuesday.

Marchan went 1-for-3 with a two-run home run and was also hit by a pitch in Monday's 13-2 victory over the Phillies.

Marchan made his first appearance of the season to give J.T. Realmuto a rare game off, and he made the most of that chance. He was one of the lone bright spots in an otherwise forgettable game for the Phillies, accounting for the team's only runs with his two-run shot in the fifth inning off of Foster Griffin. The 27-year-old had just two homers in 42 games last year, so he's already halfway to that mark to begin 2026.

Contreras went 2-for-4 with a two-run home run in Monday's 3-2 loss to the Rays.

Contreras' two-run shot in the sixth inning of Nick Martinez accounted for all of the scoring for Milwaukee. Through four games, Contreras is 4-for-15 at the plate with a pair of doubles, one home run, five RBI, three runs scored and a 4:2 BB:K, good for a 1.021 OPS.

Hicks went 2-for-3 with a two-run home run and an additional RBI in Monday's 9-4 loss to the White Sox.

Hicks cracked his second homer of the campaign Monday. Most of the 26-year-old backstop's action in 2026 is likely to come at either catcher, designated hitter or first base, as Agustin Ramirez is locked in as Miami's top catcher, and Hicks is making an early case for the Marlins to find ways to get his bat into the lineup.

Smith is not in the lineup for Monday's contest against the Guardians.

Smith will receive a day off after starting at catcher in each of the Dodgers' first three games of the season. It will be Dalton Rushing behind the dish and batting ninth in Monday's series opener versus Cleveland.