Casas went 1-for-3 with one walk and a three-run home run in Tuesday's 8-3 win over Seattle.

Casas extended the Red Sox's lead to four runs in the seventh inning, when he took Trent Thornton deep to center field for a three-run home run. It was Casas' second homer of the season, and he has a disappointing .519 OPS through 22 games and has just three hits in his last 25 at-bats.

Athletics general manager David Forst said Tuesday that Kurtz will not be platooned, Martin Gallegos of MLB.com reports.

The left-handed-hitting Kurtz has batted .296/.323/.482 versus lefties this season at Triple-A Las Vegas, and the Athletics want to give their top prospect a chance to be an everyday player. Kurtz will not play Tuesday against Rangers lefty Patrick Corbin, although that's more about giving him a chance to get acclimated in the majors. It's not clear whether the Athletics will officially add Kurtz to the roster Tuesday or wait until Wednesday. Kurtz is expected to serve as the Athletics' everyday first baseman, with some starts at designated hitter likely to be mixed in.

Athletics general manager David Forst said Tuesday that Soderstrom will see some playing time in left field and at designated hitter once first baseman Nick Kurtz is promoted from Triple-A Las Vegas on Wednesday, Martin Gallegos of MLB.com reports.

Soderstrom has never played a position other than first base and catcher during his time in professional ball, so he will be learning left field on the fly. Brent Rooker will also see increased reps in left field in addition to DH. Kurtz is likely to see some action at DH as well, but most of his playing time will likelly come at first base, where he is regarded as a superior defender to Soderstrom.

The Athletics could elect to wait until Wednesday to officially promote Kurtz from Triple-A Las Vegas with the team scheduled to face left-handed starter Patrick Corbin in Tuesday's game against the Rangers, Martin Gallegos of MLB.com reports.

Reports surfaced earlier Monday indicating that Kurtz was set to join the big club, but the 22-year-old looks like he'll end up waiting a couple more days before making his MLB debut. Kurtz earned his spot on the big-league roster after slashing .321/.385/.655 with seven home runs over 96 plate appearances with Las Vegas to begin the season.

Walker is not in the lineup for Monday's game against the Blue Jays.

Walker hit his second home run of the season this past weekend against the Padres, but he's just 3-for-26 across his last eight contests and is slashing only .156/.253/.260 on the season. Zach Dezenzo is at first base and hitting ninth for the Astros.

The Athletics are set to promote Kurtz from Triple-A Las Vegas prior to Tuesday's game against the Rangers, Martin Gallegos of MLB.com reports.

The No. 4 overall pick in the 2024 First-Year Player Draft, Kurtz has slashed a robust .321/.385/.655 with seven home runs with Las Vegas this season and will make his major-league debut after racing through the minors. Kurtz is likely to split time between designated hitter and first base with Tyler Soderstrom, resulting in Brent Rooker seeing more starts in left field.

Vaughn is absent from the lineup for Monday's game in Boston.

It's a day off for Vaughn, who had started every game since April 4. Nick Maton is covering first base and batting leadoff for the White Sox, while Andrew Benintendi is getting at start at designated hitter.

Vaughn went 2-for-5 with a two-run home run in Sunday's 8-4 win over the Red Sox.

Vaughn extended the team's lead to 7-4 with a 405-foot blast off Liam Hendriks in the eighth inning. The 27-year-old snapped a modest five-game hit streak Saturday but rebounded with his first multi-hit effort of the season. Overall, he's slashing an uninspiring .152/.193/.291 with three home runs, 10 RBI and five runs scored across 83 plate appearances.

Torkelson went 1-for-3 with a walk and a three-run home run in Saturday's 3-1 win over the Royals.

Following a disappointing 2024 campaign, Torkelson has gotten off to a great start in 2025, and his long ball Saturday proved to be the game winner. The 25-year-old has a robust 1.049 OPS, seven home runs and 21 RBI through 21 games. The homer and RBI totals lead the team and rank among the top five in the majors as well.

Casas went 1-for-4 with a walk and an RBI in Saturday's 4-3 extra-inning win over the White Sox.

Casas delivered the game-winning run in the 10th inning with a bases-loaded single. While it's way too early to claim the walk-off hit has ended Casas' early-season swoon -- he entered Saturday hitting .172 with a .508 OPS -- it was a big hit for the first baseman, who was batting .125 (2-for-16) with runners in scoring position prior to Saturday's knock.