Heim is absent from Saturday's lineup against Seattle.

Heim went 0-for-4 with one strikeout in the Rangers' 5-4 loss to the Mariners on Friday. Since the beginning of September, he's gone just 1-for-29 with six strikeouts. Carson Kelly will start behind home plate Saturday while batting eighth.

Amaya isn't in the Cubs' lineup for Saturday's game against the Rockies.

Amaya has been in a bit of a slump at the plate lately, going just 1-for-21 over his last eight games. The Cubs will instead put Christian Bethancourt behind the plate Saturday in an effort to find some offensive production from their catcher.

The Diamondbacks designated Knizner for assignment Saturday.

Knizner has remained in the minors throughout the duration of his time in the D-backs organization, slashing .274/.357/.397 with 12 RBI across 84 plate appearances. He'll now be stripped of his spot on the 40-man roster, which will be handed to Brandon Hughes, and the 29-year-old Knizner may attract interest on the waiver wire from other teams in need of depth behind the plate.

Rortvedt is not in Saturday's lineup against the Guardians.

Rortvedt has been getting the majority of the reps behind the plate for the Rays, but he'll be out of the lineup for the second straight game. Logan Driscoll -- who smacked the first homer of his career Friday -- will take Rortvedt's spot in the lineup.

Bart isn't in the Pirates' lineup for Saturday's game against Kansas City.

Bart will grab a seat on the bench Saturday after going 1-for-3 with an RBI during Friday's loss in the series opener. Yasmani Grandal will fill in behind the dish and bat seventh.

Wong isn't in Boston's lineup for Saturday's game versus the Yankees, Jen McCaffrey of The Athletic reports.

Wong will get a breather Saturday after going 1-for-6 with two walks through the first two games of the series. Danny Jansen will catch instead for Brayan Bello while batting eighth.

Moreno (adductor) will catch five innings at the Diamondbacks' camp facility at Salt River Fields on Saturday, Arizona Sports reports.

Arizona manager Torey Lovullo said Friday the team will assess how Moreno responds following the activity. The manager said it's possible Moreno could return for the series in Colorado next week that begins Monday.

Pages went 2-for-5 with a stolen base in Friday's 4-3 extra-innings loss to the Blue Jays.

Pages has gone 7-for-24 (.292) with three home runs and four RBI over seven games in September. He's held a slight edge in playing time lately at catcher over Ivan Herrera in the absence of Willson Contreras (finger). Overall, Pages is at a .249/.287/.391 slash line with two steals, six home runs, 22 RBI and 17 runs scored through 182 plate appearances this season.

Perez went 2-for-3 with a two-run home run and a walk in Friday's 8-3 win over the Pirates.

Perez provided a big knock with a homer in the second inning to cap a six-run rally. He's hit safely and driven in at least one run in five straight contests, posting two homers and eight RBI in that span. The catcher is up to 27 long balls, 103 RBI, 57 runs scored, 27 doubles and a .280/.342/.482 slash line through 145 games this season.

Driscoll went 1-for-3 with a two-run homer in Friday's 3-1 win at Cleveland.

The 26-year-old rookie opened the game's scoring when he slugged a 393-foot homer off Tanner Bibee in the third inning for his first career long ball. Driscoll is currently the reserve backstop in Tampa Bay behind Ben Rortvedt, and he's hitting .235 (4-for-14) over his first six MLB games. He did flash a solid bat at Triple-A Durham before his promotion, slashing .292/.367/.473 with seven homers across 293 plate appearances, so it's possible the Rays give him more playing time down the stretch.