Vaughn is out of the lineup for Tuesday's game versus the Royals, Vinnie Duber of AllCHGO.com reports.

Vaughn started the first 16 games of the season but has a .457 OPS and is 1-for-16 over his past four contests. Gavin Sheets will start at first base as Eloy Jimenez (adductor) is back from the injured list and at designated hitter.

Mountcastle is out of the lineup for Tuesday's game against the Twins.

Mountcastle is off to a hot start this season with a .305/.368/.492 slash line through 15 games, but he'll take a seat for Tuesday's contest. Ryan O'Hearn will shift to first base while Adley Rutschman rests his legs as the designated hitter.

Schanuel is not in the lineup for Tuesday's contest in Tampa Bay.

Schanuel returned to the lineup Monday after missing a game with a testicular contusion, but he'll now head back to the bench for Tuesday's contest. Miguel Sano will occupy first base and bat cleanup for the Angels. Schanuel went 0-for-5 Monday and is now just 4-for-42 on the season.

Santana is absent from the lineup for Tuesday's game in Baltimore.

Alex Kirilloff will get the nod at first base while Santana takes a seat. It's the second day off of the season for Santana, who is slashing an ugly .135/.224/.154 over his first 14 contests.

Pasquantino went 2-for-3 with a solo home run and a double in Monday's win over the White Sox.

Pasquantino went deep for the second straight game, crushing a 421-foot solo shot off Nick Nastrini in the fourth inning. The Royals first baseman is riding a five-game hit streak over which he has gone 9-for-21 with three home runs, 10 RBI and five runs scored. Pasquantino has used the hot stretch to significantly boost his season slash line, which stands at .255/.344/.473 over 64 plate appearances.

Schanuel (groin) will start at first base and bat fifth in Monday's game in Tampa Bay.

Schanuel exited Saturday's game and didn't play Sunday because of a testicular contusion, but he's feeling well enough to give it a go in this one. The rookie first baseman is sporting a woeful .108/.292/.189 batting line through his first 12 contests this season.

Aranda will have the pins removed from his surgically repaired right ring finger Monday, MLB.com reports.

Aranda has continued to engage in all baseball activities besides swinging, but with the pins getting removed, he should be able to start taking some hacks in the batter's box. The Rays haven't provided an exact timeline for Aranda to return from the 10-day injured list, though early or mid-May could be a realistic target.

Pasquantino went 1-for-3 with a solo home run and a walk in Sunday's 2-1 loss to the Mets.

Pasquantino was the only Royal to get on base multiple times in the low-scoring loss. He got Kansas City on the board with a ninth-inning homer, his second long ball in four games. After an ice-cold start to the season, he's gone 8-for-15 with nine RBI over his last four contests. Pasquantino remains the Royals' top option at first base, though he could also lose some at-bats versus left-handed pitchers if Nick Loftin sees more time at first once Michael Massey (back) joins the competition for playing time at second base.

Mountcastle went 2-for-4 with a solo home run and a walk in Saturday's 11-5 loss to the Brewers.

Mountcastle opened the scoring with his first-inning blast off former Orioles prospect DL Hall. Mountcastle has hit safely in his last five games, going 9-for-21 (.429) in that span. He's batting .314 with a .912 OPS, two homers, nine RBI, nine runs scored and five doubles over 13 contests in a near-everyday role at first base.

Walsh is out of the lineup for Sunday's game at Houston.

Walsh is 2-for-18 with four walks, four RBI and eight strikeouts over his past seven games, and he'll take a seat against Astros righty Cristian Javier. Ezequiel Duran will start at first base and bat eighth Sunday.