The Blue Jays designated Serven for assignment Monday.

Serven hit only .159/.243/.222 over 28 contests with Toronto. The Blue Jays are replacing him with Tyler Heineman, who will be the backup catcher behind Alejandro Kirk down the stretch.

Fermin is out of the lineup for Monday's game against the Tigers.

Fermin will be on the bench for the second day in a row, but he should be a semi-regular presence in the lineup over the final two weeks of the season while the Royals give veteran catcher Salvador Perez time off behind the plate and deploy him at first base or designated hitter. Though he's mustered an underwhelming .505 OPS thus far in September, Fermin has been a near-league-average hitter (101 wRC+) with a .286/.335/.387 slash line over 344 plate appearances for the season.

D'Arnaud is not in the lineup for Monday's contest versus the Dodgers.

Sean Murphy will start at catcher for Atlanta on Monday. He and d'Arnaud wound up splitting the catching duties during the four-game series with the Dodgers, with both making two starts apiece.

Murphy (knee) has yet to resume catching and isn't expected to be activated from the 60-day injured list before the season ends Sept. 29, Evan Webeck of the East Bay Times reports.

Murphy has resided on the IL since May 5 with a sprained MCL in his left knee. Though he avoided surgery and was expected to make a full recovery from the injury in six weeks, Murphy has been a slow healer, with the knee injury still presenting too much pain for him to resume squatting behind the plate. The knee sprain hasn't kept him from hitting, throwing and running, but the Giants aren't keen on activating the 33-year-old if he's available only as a designated hitter or pinch-hitting option. Murphy said that he expects to be ready to resume catching in spring training after getting a full offseason of recovery.

Langeliers entered Sunday's loss to the White Sox in the ninth inning as a pinch hitter and hit a solo home run in his only at-bat.

Langeliers had ceded catching duties to Kyle McCann to open the day, yet he was able to come through off the bench with his 26th homer of the season. The round tripper got the Athletics to within one run, but the rally stagnated at that point. Langeliers snapped a 10-game extra-base-hit drought with the timely blast, as well as a brief 0-for-13 skid that had encompassed his last three games.

Haase went 3-for-5 with a two-run homer and two runs scored in Sunday's loss to the Diamondbacks.

Haase did damage in the sixth inning with a two-run blast to left off of Kevin Ginkel. It was his second time with three hits in a game this season and second home run over his last three starts. He's made just three starts since the beginning of September and is up to five homers, 13 RBI and nine runs scored for the year.

Rutschman went 2-for-3 with a two-run home run and a walk in Sunday's 4-2 loss to the Tigers.

This was Rutschman's first homer in nearly a month, and he hit just .175 (14-for-80) over 22 contests between long balls. It's been an unusually long slump for the star catcher, which has seen him drop to fifth in the order after most frequently batting second for most of the season. He's still got some time to set aim for his second straight 20-homer year -- he's one shy now while adding 76 RBI, 63 runs scored, one stolen base and a .254/.324/.400 slash line over 137 contests.

Stallings went 1-for-3 with a solo home run and a walk in Sunday's 6-2 loss to the Cubs.

Stallings has gone 14-for-55 (.255) over 17 contests since the start of August as Colorado's backup catcher. He has four homers in that span and a career-high nine on the year, offering a bit of pop despite limited playing time. Overall, he's maintained a .261/.358/.455 slash line with 35 RBI, 27 runs scored, 14 doubles and one triple over 258 plate appearances.

Barnes exited Sunday's contest with Atlanta in the fifth inning with a left big toe contusion.

Barnes was forced to the leave the game before his second at-bat with a familiar injury. The catcher had a fracture in the same toe in August, and it's unclear how long he could be unavailable for. Will Smith replaced him behind the plate and will continue to get the lion's share of work at catcher moving forward.

Smith is out of the lineup for Sunday's game against Atlanta.

Smith will receive some routine maintenance after he had started behind the plate in each of the Dodgers' last three games. Austin Barnes will handle catching duties for the Dodgers in the series finale in Atlanta.