Mountcastle (wrist) has yet to resume swinging a bat, Andy Kostka of TheBaltimoreBanner.com reports.

Orioles manager Brandon Hyde admitted Monday that while Mountcastle's sprained left wrist is feeling better, he has "no idea" regarding a potential timetable for the first baseman's return. Mountcastle initially suffered the injury Aug. 22 before landing on the 10-day injured list Aug. 26. Ryan O'Hearn and Emmanuel Rivera have been handling first base with Mountcastle out.

Santana is absent from the lineup for Monday's game in Tampa Bay.

Santana was also out of the lineup for Sunday's win over the Blue Jays, although he received a couple plate appearances off the bench. The veteran switch hitter has gone 5-for-29 at the plate over his last nine contests, and the slump might be starting to cost him some playing time. Jose Miranda will pick up a second straight start at first base.

Vaughn is not in the lineup for Monday's game in Baltimore.

Vaughn and Gavin Sheets have been alternating starts between first base and designated hitter over the last several weeks, but Vaughn will get a day off for Monday's series opener. Sheets will start at first base, and Corey Julks is in the lineup at DH.

Singleton went 1-for-3 with a two-run home run and a walk Sunday against the Royals.

Singleton has fallen into a rotation at first base with Yainer Diaz, Victor Caratini and Zach Dezenzo, leaving him with starts every two to three games. He was in the lineup Sunday hitting sixth and delivered his 12th home run of the season, which was also his third long ball in his last 11 appearances.

Brown went 2-for-4 with an RBI triple, a walk and a run in an extra-inning loss to the Rangers on Sunday.

Brown provided one of four multi-hit efforts on the afternoon for the Athletics, and his first triple of 2024 drove home Shea Langeliers in the 10th inning to snap a 2-2 tie. Brown now has multi-hit tallies in four consecutive starts, with Sunday's three-bagger his third extra-base hit in that stretch. His hot bat dates further back, however -- factoring in Sunday's production, the veteran outfielder boasts a .375 average across his last nine games.

Torkelson went 1-for-3 with a two-run home run Sunday against the Red Sox.

Torkelson's two-run blast in the fifth was the first hit of the day for the Tigers and provided a lead they would not relinquish. It was Torkelson's eighth homer of the season and his fourth in 15 games since returning to the majors.

Kavadas is out of the lineup for Sunday's game against the Mariners.

The left-handed-hitting Kavadas' run as a regular in the Angels lineup could be coming to an end; he'll now head to the bench for the second straight matchup with a right-hander. Since getting called up from Triple-A Salt Lake on Aug. 16, Kavadas has gone 3-for-34 (.088 average) with one home run and a 48.6 percent strikeout rate.

Turner is out of the lineup for Sunday's game against the Angels.

Turner had started in six of the Mariners' previous seven contests, but all but one of those came against left-handed starting pitchers. The 39-year-old looks like he'll fill the short side of a platoon at first base with Luke Raley while Seattle has all of its key bats available.

Lowe is out of the lineup for Sunday's game against the Athletics.

Lowe will hit the bench Sunday after a run of 22 straight starts, during which he posted a .237/.322/.350 slash line with just four extra-base hits. The 29-year-old's bat has been a bit livelier of late, however, as he's gone 7-for-18 with a double and a homer during his ongoing five-game hit streak.

Guerrero is out of the lineup for Sunday's game against the Twins.

Guerrero started the previous eight games and will get a day off Sunday after going 14-for-31 (.452 average) with four doubles and a homer during that span. Spencer Horwitz will take over at first base while Davis Schneider receives a turn at designated hitter.