Mets manager Carlos Mendoza said after Sunday's 7-3 win over the Mariners that Alvarez would return to New York on Monday to undergo an MRI on his jammed right thumb, the Associated Press reports. "Right now, we don't know what we're dealing with," Mendoza said of Alvarez's injury.

Alvarez went 3-for-4 with two runs scored and an RBI before exiting in the eighth inning, after he had initially stayed in the game upon jamming the thumb on a head-first slide into second base on his seventh-inning double. The Mets are off Monday, so the team will likely wait for the results on Alvarez's MRI to become available before determining if he'll meet back up with the team in Washington on Tuesday for the start of a three-game set with the Nationals. Luis Torrens would be in line to take over as the Mets' No. 1 catcher if Alvarez requires a stint on the injured list.

Jansen will start at catcher and bat eighth in the first game of Monday's doubleheader versus the Cubs.

William Contreras will get a break from catching but stay in the lineup at designated hitter for the first contest of the twin bill, enabling Jansen to make a second consecutive start. Since being acquired from the Rays on July 28, Jansen has seen light usage overall with Milwaukee, appearing in seven contests while slashing .222/.286/.278 with four runs and one RBI.

Bart went 1-for-4 with a double and two RBI on Sunday against the Cubs.

Bart saw his playing time slip for much of July, but he has mostly alternated starts with Henry Davis since Aug. 4. In eight games since, Bart has gone 6-for-24 with two doubles, one home run and four RBI. He delivered a two-RBI double in the sixth inning Sunday to briefly give the Pirates the lead.

Orioles manager Tony Mansolino confirmed prior to Sunday's 12-0 win over the Astros that Jackson will serve as the team's No. 3 catcher behind Adley Rutschman and Samuel Basallo moving forward, Jacob Calvin Meyer of The Baltimore Sun reports.

Widely regarded as one of the organization's top prospects, Basallo was called up from Triple-A Norfolk on Sunday and entered the lineup at designated hitter for the series finale with Houston. While Rutschman is likely to see the bulk of the starts behind the plate for the rest of the season, Mansolino indicated that Basallo will be the top choice to handle catching duties when Rutschman needs a day off or is deployed as a DH. With that in mind, Jackson -- who had been serving as Rutschman's top understudy -- appears likely to see his already limited opportunities dwindle further over the final six weeks of the season. Jackson is slashing .227/.292/.591 with three home runs, four RBI and 11 runs over 48 plate appearances for Baltimore since being acquired from the Yankees on July 6.

Basallo went 1-for-4 with two RBI in Sunday's 12-0 win over the Astros. He also reached base when he was hit by a pitch.

Called up from Triple-A Norfolk earlier Sunday, Basallo entered the lineup at designated hitter and as the Orioles' No. 6 batter in his MLB debut. The 21-year-old broke through with his first hit in his final plate appearance of the day, singling with the bases loaded in top of the eighth inning to drive in the game's final two runs. Prior to the game, interim manager Tony Mansolino told Jacob Calvin Meyer of The Baltimore Sun that the Orioles want to assess Basallo's abilities at catcher over the next six weeks, but Basallo is still viewed as the No. 2 option at the position behind Adley Rutschman. Per Andy Kostka of TheBaltimoreBanner.com, the Orioles plan to have Basallo make his first start at catcher in Monday's series opener in Boston, then use him at DH in Tuesday's series finale. Basallo could also pick up some starts at first base over the final few weeks of the season, though the Orioles may prioritize Coby Mayo and Ryan Mountcastle at that position.

Stephenson is dealing with a sore left thumb and is available to catch in an emergency, MLB.com reports.

Stephenson initially banged the thumb during a series in Pittsburgh two weeks ago and then again against Philadelphia on Aug. 13. He then aggravated the issue Friday against Milwaukee and sat out the last two games. Jose Trevino is filling in behind the plate.

Moreno (finger) caught seven innings for Triple-A Reno on Saturday, going 1-for-3 with a walk, a double and two runs scored.

Moreno followed up Saturday's effort by serving as the DH on Sunday and playing all nine innings. He's alternated catching and DH over four games on his rehab assignment, during which he's 4-for-12 with three walks and three doubles. The Diamondbacks likely want to see him catch a full nine-inning game before activating him, although given his nearly two months of recovery, the club may want Moreno to get more plate appearances regardless if he catches nine innings. Either way, he's on the verge of returning to the majors.

Raleigh went 2-for-5 with a two-run home run in Sunday's 7-3 loss to the Mets in the Little League Classic.

Raleigh is now one homer shy of matching Salvador Perez's record for a catcher in a single season. Raleigh sent his 47th blast out to left field in the seventh inning, though that was the extent of the Mariners' comeback effort in this neutral-site game. He got his groove back against the Mets' pitching staff this weekend, going 7-for-12 with three walks and four extra-base hits during the three-game series. Raleigh is slashing .252/.359/.600 with 102 RBI, 82 runs scored, 14 stolen bases and 18 doubles across 122 games this season.

Naylor went 4-for-5 with an RBI double in Sunday's loss to Atlanta.

Naylor was stuck in a 2-for-23 (.087) skid since his last multi-hit performance Aug. 2. He snapped the drought in a big way with a career-high four hits Sunday, highlighted by his RBI double in the third inning. Naylor owns a .184/.283/.368 slash line with 27 extra-base hits and 28 RBI through 315 plate appearances on the campaign.

Alvarez was removed from Sunday's contest against the Mariners in the eighth inning due to a right hand injury, Andrew Tredinnick of The Bergen Record reports.

Alvarez appeared to jam his hand on a head-first slide into second base in the bottom of the seventh inning, which ultimately required him to leave the game in the following frame. The catcher finished 3-for-4 with two doubles, an RBI and two runs scored. More information on his status will likely be provided following the contest.