McCann was scratched from the lineup ahead of Friday's game against the Dodgers.

The Diamondbacks haven't provided a reason as to why McCann was taken out of the starting nine, but the team should offer some clarity in the near future. In the meantime, Gabriel Moreno will catch for starter Zac Gallen and bat fifth.

Kelly isn't in the lineup for Friday's game against the Rockies.

The 31-year-old will surrender a second consecutive start at catcher to Reese McGuire on Friday after having started three straight games behind the dish. Kelly has been in a bit of a slump lately, slashing just .224/.288/.224 with six RBI and two runs scored in 21 games since Aug. 1.

Moreno isn't in the lineup for Friday's game against the Dodgers.

Moreno will catch a breather Friday after going 4-for-13 with a homer, three RBI and three runs scored during Arizona's last series in Milwaukee. James McCann will draw the start behind home plate instead and bat sixth.

Diaz (hand) is starting behind the plate and batting seventh Friday against the Angels, Matt Kawahara of the Houston Chronicle reports.

Diaz sat out the past few days due to a hand injury but will return to action for Friday's series opener versus the Halos. The 26-year-old will look to continue his modest five-game hit streak, during which he's gone 7-for-19 with three walks and a homer.

Realmuto isn't part of the starting lineup for Friday's game against Atlanta, Lochlahn March of The Philadelphia Inquirer reports.

Realmuto will get the night off Friday after making four straight starts behind the plate. He went 1-for-15 with a two-run home run during that stretch. Rafael Marchan will fill in for Realmuto at catcher.

Ruiz (concussion) is ramping up baseball activities and is expected to begin a minor-league rehab assignment soon, Bobby Blanco of MASNSports.com reported Friday.

Ruiz started taking swings in batting practice last week, a significant stride in his recovery from a concussion he sustained in early July. The catcher will ramp up baseball activities this weekend, and the expectation is that he'll be cleared to begin a rehab assignment soon. In the meantime, Riley Adams and C.J. Stubbs will handle catching duties.

Nationals interim manager Miguel Cairo said Friday that Millas will not return this season after undergoing surgery Friday to stabilize the fracture and repair the joint on his left index finger, Bobby Blanco of MASNSports.com reports.

Millas suffered the injury on a catcher's interference during Wednesday's game against the Yankees. The Nationals expect him to be ready for the beginning of spring training.

The Cardinals placed Pozo on the 7-day concussion injured list Friday.

Pozo was able to remain in the game after being shaken up by a foul tip to the mask Thursday against the Pirates, but concussion symptoms eventually surfaced and he'll have to miss some time. The Cardinals will go with Jimmy Crooks and Pedro Pages at catcher while Pozo is sidelined.

Kirk (hand) is catching and batting sixth Friday against Milwaukee.

Kirk's right hand swelled up after being hit by a foul tip during Tuesday's game. While he finished Tuesday's contest, he was held out of Wednesday's game. The catcher will make his return to the starting lineup Friday and will look to extend his five-game hit streak.

The Cardinals selected Crooks' contract from Triple-A Memphis on Friday.

Crooks has slashed .337/.404/.518 with three home runs in August with Memphis and has hit .274/.337/.441 with 14 home runs there for the full season. The left-handed hitter could be worth a look in fantasy leagues if the Cardinals use him on the long side of a platoon at catcher with Pedro Pages. Crooks is not in the lineup for Friday's game in Cincinnati against righty Zack Littell, though the Cardinals could just be giving him a day to get settled in.