Casas (ribs) still experiences pain when rotating and has not yet begun swinging a bat, Julian McWilliams of The Boston Globe reports.

Casas has been taking grounders and hitting the weight room, but that he's not yet swinging a bat suggests he may not return June 21, the earliest he can be activated off the 60-day injured list. "Whenever he feels better about it and he doesn't feel pain, then [swinging] is the next step," manager Alex Cora said. "It's not about treatment or whatever. It just kind of had to heal on its own." While Casas has been sidelined, the Red Sox are getting by with Dominic Smith and Garrett Cooper at first base.

Lowe started at first base and went 1-for-2 with a walk in Tuesday's 3-1 loss to the Tigers.

Lowe returned to the starting lineup against a right-hander following three consecutive games on the bench against a lefty. He was eventually removed for pinch hitter Robbie Grossman in the ninth inning against a left-hander. Lowe's line against southpaws in 2024 is down from his career standard -- .619 OPS this season compared to .761 for his career -- but that's still better than the alternative. Ezequiel Duran, who started at first base while Lowe was benched, owns a .604 OPS against lefties in 2024.

Mountcastle went 2-for-5 with a three-run home run and a two-run shot during Tuesday's 10-1 win over the Blue Jays.

Mountcastle was a one-man wrecking crew Tuesday, launching homers in the third and fifth innings -- both off Bowden Francis. The outing was Mountcastle's second multi-homer game of June and the 10th of his career. The first baseman has been on fire during the O's last four series, a stretch where he's batting .388 with 11 RBI and 10 runs scored across 12 games.

Dalbec went 1-for-3 with two RBI during Tuesday's 8-3 loss to Atlanta.

Dalbec got his first start since being called up Sunday, filling in at right field -- a position he hadn't played at the MLB level before -- with Wilyer Abreu (ankle) sidelined. Dalbec plated Rafael Devers and Connor Wong on a fourth-inning single for his only hit of the day. With Tyler O'Neill (knee) set for reinstatement as soon as Wednesday, Dalbec figures to be an alternative option at right field or first base for the duration of his big-league stay.

Vaughn (finger) will start at first base and bat second in Tuesday's game against the Cubs.

Vaughn sprained his left ring finger over the weekend and missed the entirety of the White Sox's three-game series with the Brewers. However, after a team day off Monday, Vaughn will return to the White Sox lineup in time for the start of its series with the North Siders.

Guerrero went 2-for-4 with a solo home run in Monday's loss to the Orioles.

The 25-year-old crushed a Grayson Rodriguez slider in the fourth inning, sending it over the fence in straightaway center field with an exit velocity of 109.2 mph. Guerrero is beginning to flash a little more power -- over his last 11 games, he has three doubles and two of his six homers on the year -- but he's been making plenty of hard contact, slashing .367/.452/.495 since the beginning of May with 16 RBI and 16 runs in 28 contests.

Schanuel (thumb) is starting at first base and batting leadoff in Monday's game against the Padres.

Schanuel missed three contests while nursing a sore left thumb but is feeling well enough to give it a go in the Angels' series opener against the Padres. The first baseman will carry an uninspiring .224/.294/.328line into action Monday.

Lowe is out of the lineup for Monday's game against the Tigers.

Though Lowe owns a 113 wRC+ against left-handers for his career, he's struggled to maintain that level of effectiveness in those matchups so far this season. Over 55 plate appearances versus lefties in 2024, Lowe is slashing .250/.327/.292 (80 wRC+). At least for the time being, manager Bruce Bochy is seemingly viewing Lowe as a platoon player. The first baseman is on the bench for the third game in a row, with the Rangers facing lefties in each of those contests.

The Tigers optioned Torkelson to Triple-A Toledo on Monday.

Multiple reports after the Tigers' 8-4 win over the Red Sox on Sunday suggested that Torkelson was en route to Triple-A, but Detroit waited until shortly before Monday's series opener in Texas to make the move official. Torkelson slugged 31 home runs last season, and many anticipated another step forward in 2024, but it simply hasn't come together, with the former top prospect slashing just .201/.266/.330 with four home runs across 229 plate appearances. He'll be back in the majors eventually, but a reset at Toledo was deemed necessary. Mark Canha will draw the start at first base Monday, and Gio Urshela will also be an option at the position while Torkelson is out of the picture.

Abreu is out of the lineup for Monday's contest against the Cardinals.

Abreu has now started five of eight games since rejoining the Astros' active roster, going 3-for-15 with one home run. He'll cede his spot in the lineup Monday to Jon Singleton, who gets the start at first base.