Narvaez is out of the lineup for Friday's game against the Pirates, Tim Healey of The Boston Globe reports.

Narvaez has been ceding more work to Connor Wong recently, and it'll be Wong who starts Friday's game behind the dish. Including Friday, both catchers have made five starts in Boston's last 10 games.

The Nationals selected Stubbs' contract from Triple-A Rochester on Friday, Andrew Golden of The Washington Post reports.

The former Astros farmhand will take the place of Drew Millas (finger) on the active roster. Stubbs will be making his MLB debut when he gets into a game and is set to serve as Riley Adams' backup at catcher.

The Nationals placed Millas on the 10-day injured list Friday with a fractured and dislocated left index finger.

Millas suffered the injury when he was struck by an Austin Wells swing during Wednesday's game against the Yankees. The Nationals haven't revealed a timeline for Millas' return, but there's a good chance he's done for the season.

The Cardinals will place Pozo on the 7-day concussion injured list prior to Friday's contest in Cincinnati, Katie Woo of The Athletic reports.

Pozo was examined by the trainer after taking a foul tip off his mask Thursday. and while he stayed in and finished the game, he subsequently displayed symptoms of a concussion. Jimmy Crooks is being called up from Triple-A Memphis to take Pozo's spot on the active roster and split catching duties with Pedro Pages.

Pozo will be evaluated for a possible concussion Friday after taking a foul tip off the mask during Thursday's win over the Pirates, Derrick Goold of the St. Louis Post-Dispatch reports.

Pozo was checked out by the Cardinals' training staff Thursday and stayed in to finish the contest, but that doesn't preclude concussion symptoms from surfacing later. Catcher Jimmy Crooks is expected to be promoted from Triple-A Memphis, which could point to Pozo being placed on the 7-day concussion injured list.

The Cardinals will call up Crooks from Triple-A Memphis prior to Friday's game against the Reds, Derrick Goold of the St. Louis Post-Dispatch reports.

Crooks is ready for an opportunity at the major-league level after slashing .274/.337/.441 with 14 home runs this season with Memphis. The 24-year-old has been red hot in August, producing a .337/.404/.518 line with three long balls. It's not clear what the corresponding move will be to get Crooks on the active roster, but Yohel Pozo was shaken up by a foul tip off the mask Thursday. If Pozo needs to miss time, Crooks could share catching duties with Pedro Pages.

Realmuto went 1-for-3 with a two-run home run, a walk and a second run scored in Thursday's 19-4 win over Atlanta.

Realmuto hit the second of three Philadelphia homers in the first inning, tying the game at 3-3 to erase Atlanta's early lead. The catcher had gone 0-for-12 with five strikeouts over the Phillies' three-game series against the Mets earlier in the week. Realmuto has four homers in his last nine contests and is up to 11 long balls on the year. He's added 47 RBI, 47 runs scored, 24 doubles, one triple, seven stolen bases and a .271/.327/.411 slash line through 111 games.

Jackson went 1-for-3 with a solo homer and an additional run scored in Thursday's 3-2 loss to the Red Sox.

Making his fourth start in eight games, Jackson got Baltimore on the board in the third inning with a 395-foot shot off Garrett Crochet for his fourth homer this year. The 29-year-old Jackson had initially fallen to third on the Orioles depth chart after Samuel Basallo was called up, though he's been alternating starts behind the plate with the rookie after Adley Rutschman (oblique) landed on the IL. Overall, Jackson is slashing .250/.308/.567 with 14 runs scored and six RBI across 65 plate appearances this season.

Alvarez (thumb) suffered a fractured left pinky finger when he was hit by a pitch during a rehab game at Triple-A Syracuse on Wednesday, Anthony DiComo of MLB.com reports.

Alvarez had been working his way back from a right thumb issue that will require him to undergo surgery eventually. Although he's now dealing with injuries to both of his hands, the young backstop expressed optimism that he'll be able to return at some point this season. Until then, Luis Torrens will continue to work as the main catcher in Queens with Hayden Senger backing him up.

Torrens is not in the lineup for Thursday's game versus the Marlins.

It's Torrens' second consecutive day out of the lineup after he had started in three straight games prior to that. Hayden Senger will be behind the plate as the Mets continue to divvy up catching duties evenly in the absence of Francisco Alvarez (thumb).