Amaya isn't in the Cubs' lineup for Tuesday's game against the Pirates.

Amaya will take a seat Tuesday after going 0-for-3 with a strikeout during a loss in Monday's series opener. Christian Bethancourt will start behind the dish instead and bat ninth.

The Marlins designated Sanchez for assignment Tuesday.

Miami selected the 27-year-old's contract from Triple-A Jacksonville on June 21, and he primarily served as a backup catcher during his time with the big club. Jhonny Pereda is now poised to fill that role after Sanchez posted a .167/.211/.190 slash line in 31 games.

Pages went 2-for-4 with two solo home runs during Monday's 9-3 loss to the Cardinals.

Pages was the only Cardinal to have success against Brewers starter Freddy Peralta, tagging Peralta for solo homers in the third and fifth innings. It was the 25-year-old catcher's first career multi-homer game, bringing his season total to five long balls. Pages is slashing .248/.292/.389 in 162 plate appearances and should continue to split playing time with Ivan Herrera in the absence of Willson Contreras (finger).

Higashioka (illness) will start at catcher and bat eighth in Monday's game versus the Tigers, Jeff Sanders of The San Diego Union-Tribune reports.

Higashioka missed the previous two contests because he was under the weather. However, he's feeling well enough to give it a go in the series opener Monday.

Alvarez isn't in the Mets' lineup for Monday's game against Boston.

Alvarez will sit down for a second consecutive game after going 3-for-16 with two RBI over his last five contests. Luis Torrens will catch instead for Luis Severino and bat ninth.

Herrera is not in the lineup for Monday's game in Milwaukee.

In nine games since Willson Contreras (finger) went on the 10-day injured list, Herrera has started five games at catcher for the Cardinals, while Pedro Pages has garnered four starts. Pages will handle the catching duties for the series opener versus the Brewers.

Barnes went 3-for-4 with one RBI in Sunday's 14-3 loss to the Diamondbacks.

Barnes' three-hit game was a small bright spot in an otherwise awful performance for the Dodgers. The backup catcher has gone 5-for-8 over three contests since he returned from a fractured big toe sustained in mid-August. Through 139 plate appearances, Barnes is slashing .266/.336/.315 with one home run, 11 RBI, 10 runs scored and two stolen bases. He is unlikely to challenge Will Smith for a starting role, but Barnes should be expected in the lineup any time the Dodgers have a day game immediately after a night game.

D'Arnaud will start at catcher and bat fifth in Sunday's game against the Phillies.

Atlanta's timeshare at catcher has tilted in favor of d'Arnaud lately, as he'll pick up his sixth start in nine games Sunday. D'Arnaud holds an 89-point edge in OPS (.774 to .685) over Murphy this season, and that disparity may be enough for the former to see the larger share of playing time behind the dish despite the latter's bigger contract.

Murphy is out of the lineup for Sunday's game against the Phillies.

Murphy has now started just three times in nine games and may be moving into the shorter side of a timeshare at catcher with Travis d'Arnaud. The 29-year-old backstop has been a major disappointment in the second season of a six-year, $73 million contract, having submitted a career-low .685 OPS through 210 plate appearances for Atlanta.

Del Castillo is out of the lineup for Sunday's game against the Dodgers.

The lefty-hitting Del Castillo will hit the bench for the third time in four games, with each of those absences coming against left-handed pitchers. The rookie backstop still appears to be locked into the strong side of a platoon with Jose Herrera while top catcher Gabriel Moreno (adductor) is on the injured list.