Porter signed a minor-league contract with the Royals on Saturday.

After being non-tendered by the Royals on Friday, Carter will officially remain with the organization. The 28-year-old backstop spent most of his time at Triple-A Omaha last season, slashing .232/.339/.377 with 13 homers and 48 RBI.

Porter was designated for assignment by the Royals on Tuesday.

Porter went 6-for-31 (.194) with 11 strikeouts over his first 11 major-league games in 2023. The 28-year-old catcher is no longer part of the 40-man roster in Kansas City.

Red Sox chief baseball officer Craig Breslow said Wednesday that Casas (shoulder) is close to starting a hitting program, Pete Abraham of The Boston Globe reports.

Casas missed the final few weeks of the 2023 regular season because of inflammation in his right shoulder, but he is basically back to full strength here in early November. When healthy this year, the young first baseman put up a strong .856 OPS with 24 home runs and 65 RBI over 132 games.

The Guardians claimed Rivas off waivers from Pittsburgh on Thursday.

Rivas slashed .229/.303/.422 across 123 major-league plate appearances in 2023. He likely won't get the majority of reps at first base with Josh Naylor already in Cleveland, but Rivas could certainly contend for a spot on the bench next season.

No labrum tear was discovered during Kirilloff's recent shoulder surgery, Dan Hayes of The Athletic reports.

Kirilloff, accordingly, required a less invasive procedure than initially anticipated and seems to have a good shot of being fully recovered by the beginning of spring training next February. The 25-year-old battled right (non-throwing) shoulder issues in the second half of the 2023 regular season and was removed from the Twins' postseason roster before Game 4 of the ALDS because of renewed discomfort. When healthy, he put up a .793 OPS with 11 home runs across 319 plate appearances for the American League Central champions.

Abreu went 1-for-3 with a three run home run and a stolen base, adding two runs and three RBI in Thursday's 10-3 victory over the Rangers in Game 3 of the ALCS.

Abreu has continued to develop upon his recent late-season power-hitting success right into the playoffs. He had a .505 slugging percentage over 93 at-bats in September, but he is now up to a .677 mark in 31 ABs since the postseason began. One area Abreu did not cover during the regular season was stolen bases, and Thursday was the first time Abreu has stolen a base all year and the first time in his postseason career. In the current playoff run, Abreu is slashing .258/.343/.677 with eight runs and 11 RBI, adding four home runs and Thursday's stolen base in 31 at-bats.

Kirilloff will undergo surgery later this month to repair the labrum in his right shoulder, Do-Hyoung Park of MLB.com reports.

Kirilloff initially injured his shoulder in July and more recently had to be removed from the Twins' ALDS roster after suffering a setback. It's not clear at this point how long his rehab will take, but it wouldn't be a surprise if he's at least somewhat limited in spring training. It's yet another surgery for Kirilloff, who previously has had two different operations on his wrist.

Kirilloff was removed from the Twins' ALDS roster Wednesday because of a right shoulder injury, Bobby Nightengale of the Minneapolis Star Tribune reports.

Kirilloff missed all of August with a right shoulder strain and the injury seems to have resurfaced in some capacity here in the 2023 postseason. Twins manager Rocco Baldelli declined to get into specifics but noted that the 25-year-old first baseman and corner outfielder was having trouble taking full swings. Byron Buxton (knee) has been activated in a corresponding move ahead of ALDS Game 4 against the Astros on Wednesday night at Target Field.

Kirilloff (undisclosed) was placed on the 10-day injured list Wednesday ahead of ALDS Game 4 against the Astros.

There are no further details yet, but Kirilloff must have suffered a fairly serious injury in the Twins' Game 3 loss, as he will now officially be out through the ALCS. Byron Buxton (knee) has replaced Kirilloff on Minnesota's active roster for what remains of the best-of-five ALDS.

Kirilloff is not in the lineup Wednesday for Game 4 of the ALDS against the Astros.

Willi Castro, Michael Taylor and Max Kepler will start across the outfield for the Twins as they take on right-hander Jose Urquidy at Target Field. Kirilloff has gone 1-for-13 with a single, two walks and four strikeouts so far in the 2023 postseason.