The Baltimore Orioles reinstated infielder Ryan Mountcastle (wrist) from the 10-day injured list on Tuesday and optioned outfielder/designated hitter Eloy Jimenez to Triple-A Norfolk in a corresponding move. The O's haven't released their lineup for Tuesday's contest against the division-rival New York Yankees at Yankee Stadium, but it wouldn't be a surprise if Mountcastle is eased back into the fold as he returns from a left-wrist sprain that has kept him out for the past month. Before his injury, though, the 27-year-old right-handed hitter was the team's primary first baseman. Mountcastle's power has been down again this year, and he was in a 3-for-22 slump at the plate before his injury. In addition to that, he had six strikeouts in 11 minor-league rehab at-bats before his return on Tuesday. It could take him a while to get back in a groove at the plate.

The Pittsburgh Pirates designated first baseman Rowdy Tellez and outfielder Michael Taylor for assignment on Tuesday and recalled infielder Liover Peguero and outfielder Joshua Palacios from Triple-A Indianapolis in corresponding moves. The Pirates have decided to move on from a couple of veterans with the end of the 2024 regular season quickly approaching on Sunday. The 29-year-old Tellez has really struggled of late and will finish his season with a .243/.299/.392 slash line, a below-average .691 OPS, 13 home runs and 56 RBI in 131 games played for the Bucs. Connor Joe and Billy Cook figure to split first-base duties the rest of the week. Taylor, 33, hit a lowly .193/.253/.290 with five home runs, 21 RBI and 12 stolen bases in a reserve role in Pittsburgh.

Boston Red Sox infielder Kristian Campbell was named the 2024 Minor-League Player of the Year on Tuesday. Campbell is considered Boston's No. 5 prospect, per MLB Pipeline, and he earns the honors despite finishing the year on the seven-day injured list at Triple-A Worcester with a left-lat strain. The 22-year-old began the year at High-A Greenville before being promoted to Double-A Portland and then Worcester. At all three levels combined, he hit .330/.439/.558 with a .997 OPS, 20 home runs, 32 doubles, three triples, 77 RBI, 24 stolen bases and 94 runs scored in 115 games over 517 plate appearances. The 6-foot-3, 191-pounder bats right-handed has always excelled at making contact but is now starting to develop more power as well. Campbell can play short, second and the outfield, but he's likely to stick at the keystone at the next level, potentially as early as 2025.

Arizona Diamondbacks catcher Gabriel Moreno (groin) is doing the catching and is hitting eighth in the batting order on Tuesday versus the division-rival San Francisco Giants and right-hander Logan Webb at Chase Field for the second game of the series. Moreno didn't play in the series-opening loss to the Giants on Monday after he was removed from Sunday's contest against the Milwaukee Brewers with left-groin tightness. The Diamondbacks need all hands on deck as they try to secure a wild-card spot in the National League in the final week of the regular season, so the 24-year-old backstop is back in action. The Venezuelan catcher has gone 6-for-15 (.400) with an RBI and four walks in six games since returning from the IL, but he faces a tough matchup against Webb on Tuesday. In 11 career at-bats against Webb, Moreno is hitting .364 with a .728 OPS.

New York Mets shortstop Francisco Lindor (back) remains out of the starting lineup for the opener of a huge divisional series against the Atlanta Braves at Truist Park on Tuesday. Rookie infielder Luisangel Acuna will make yet another start at the 6 and will bat ninth against Braves right-hander Spencer Schwellenbach. Lindor continues to deal with a nagging back issue and will miss his eighth straight start as a result. The 30-year-old received an injection in his back recently and hopes to return to the lineup soon to help the Mets try and secure a wild-card spot in the National League. Lindor has had an MVP-like season in 2024, so not having his bat in the lineup at this crucial point in the season is bad news for the Mets. Acuna hasn't looked like a rookie in his nine games played since debuting on Sept. 14, going 11-for-29 (.379) with three homers, two doubles, a triple and six RBI.