Mountcastle is absent from the lineup for Monday's contest in San Diego.

Mountcastle started each of the previous five games, but he'll take a seat against righty Dylan Cease and the Padres on Monday. Samuel Basallo will serve as the designated hitter and Coby Mayo will handle first base for Baltimore in the series opener.

Kurtz (oblique) is out of the lineup for Monday's game against the Cardinals.

An MRI on his oblique came back clean Saturday, but Kurtz will miss a third straight game while he deals with lingering discomfort. Tyler Soderstrom will cover first base Monday in Kurtz's absence.

The Astros designated Davidson for assignment Monday.

Davidson will give up his spot on the 40-man roster to right-hander Luis Garcia (elbow), who was activated from the 60-day injured list ahead of his scheduled start Monday versus the Angels. Since being claimed off waivers from the Athletics in July and getting sent to Triple-A Sugar Land, Davidson is hitting .207 with a 34.4 percent strikeout rate in 22 games.

Lowe went 2-for-4 with a run scored in Sunday's 5-2 win over the Pirates.

Lowe returned to the team after being on paternity leave and had two hits, his third multi-hit game in 10 games since joining the Red Sox. He'll resume his role as the strong side of a platoon at first base along with Romy Gonzalez.

Tellez started at first base and went 0-for-5 in Sunday's 9-6 win over the Athletics.

Tellez has handled regular reps at first base against right-handed pitching in recent weeks, but he's gone just 5-for-27 with a 2:10 BB:K over his last 10 games and could be at risk of losing out on regular starts. According to Kennedi Landry of MLB.com, Jake Burger (wrist) could be activated from the injured list as soon as Monday, and the Rangers may consider giving the right-handed-hitting Burger a look as the full-time first baseman rather than deploying him in a platoon with Tellez.

Rangers manager Bruce Bochy said that Burger (wrist) could be activated from the 10-day injured list as soon as Monday, Kennedi Landry of MLB.com reports.

Burger wasn't sent out on a minor-league rehab assignment since landing on the injured list Aug. 18 due to a left wrist sprain, but he's been able to face live pitching at the Rangers' facility in Arizona and appears to be ready for game action. Whenever he's activated, Burger is likely to step back into the short side of a platoon at first base with the left-handed-hitting Rowdy Tellez.

Schanuel (wrist) said Friday that he has yet to resume baseball activities, Jeff Fletcher of The Orange County Register reports.

After being placed on the shelf last Sunday due to a bone bruise in his left wrist, Schanuel expressed confidence that he would be available to rejoin the Angels in the minimum 10 days, but he doesn't appear to be progressing as quickly as he anticipated. The Angels will likely continue to get by with a platoon of Niko Kavadas and Oswald Peraza at first base until Schanuel makes a full recovery.

Mayo is out of the lineup for Sunday's game against the Giants.

With Ryan Mountcastle drawing a start at first base and Gunnar Henderson getting a day off from playing shortstop but remaining in the lineup as the Orioles' designated hitter, Mayo will be the odd man out of the lineup. Mayo had started in each of Baltimore's last six games and went just 2-for-23, bringing his batting average down to .184 for the season.

Duran is batting eighth and playing second base in Sunday's game against the Athletics.

Duran will remain in the lineup for the fourth time in five games and will be occupying the keystone for the second day in a row. With super-utility man Josh Smith likely to see most of his playing time at shortstop moving forward due to Corey Seager (appendectomy) being potentially lost for the season, Duran could end up emerging as the Rangers' primary option at second base. Duran has been productive at the plate throughout August, slashing .328/.349/.410 with no home runs and three stolen bases through 20 games on the month.

Kurtz (oblique) is out of the lineup for Sunday's game against the Rangers.

The 22-year-old had an MRI come back clean Saturday, but he'll still be held out of the lineup for a second consecutive game. Manager Mark Kotsay indicated Saturday that Kurtz should be back soon but didn't provide a target date. Tyler Soderstrom is filling it at first base, with Carlos Cortes starting in left field.