The Giants designated Villar for assignment Monday, Susan Slusser of the San Francisco Chronicle reports.

The move frees a spot on the active roster for the return of Casey Schmitt (oblique) from the 10-day injured list. Villar has been outrighted off the 40-man roster previously, so if he clears waivers again, he would have the ability to elect free agency.

The Giants activated Schmitt (oblique) from the 10-day injured list Monday, Susan Slusser of the San Francisco Chronicle reports.

Schmitt will start at first base and bat sixth Monday against the Royals. He missed the past month with a Grade 2 left oblique strain. Schmitt is capable of playing all four infield spots and will likely serve as a short-side platoon player for the Giants now that he's healthy again.

Triolo will start at second base and bat ninth in Monday's game against the Reds.

Though he'll be included in the lineup Monday with southpaw Nick Lodolo taking the hill for Cincinnati, the right-handed-hitting Triolo no longer looks to be in the mix for regular playing time versus righties. He was on the bench for both of the Pirates' previous two matchups with right-handers, with the recent return of Isiah Kiner-Falefa having closed off Triolo's path to an everyday role in the Pittsburgh infield.

Horwitz is out of the lineup for Monday's game against the Reds.

The left-handed-hitting Horwitz could end up settling into a full-time role with the Pirates eventually, but he'll take a seat for the series opener versus the Reds while lefty Nick Lodolo takes the hill for Cincinnati. After being reinstated from the injured list Saturday after he had been on the shelf all season while recovering from a procedure to alleviate pain in his right wrist, Horwitz started at first base in the final two games of the Pirates' weekend series with the Phillies, going 1-for-6.

Mervis is absent from the lineup for Monday's game against the Cubs.

Mervis has seen his playing time slip lately, as this is the fourth time over the Marlins' last 10 contests versus right-handed pitching that he's been out of the lineup. The 27-year-old is just 3-for-30 with a 44.1 percent strikeout rate across his last 12 games. Liam Hicks is in the designated hitter spot and batting seventh in Monday's series opener.

Long left Saturday's game for Triple-A Iowa due to a tight leg muscle, Tommy Birch of the Des Moines Register reports.

Long is slashing .367/.429/.533 with four home runs, two steals, a 9.5 percent walk rate and a 24.9 percent strikeout rate in his first 40 games at Triple-A. His 33.9 percent hard-hit rate is strong, but Long's .486 BABIP illustrates his good fortune in the early going. He hasn't been placed on Iowa's injured list and should be considered day-to-day for now.

Olson went 2-for-3 with a walk, two doubles, a run scored and an RBI in Sunday's win over the Red Sox.

The first baseman has reeled off three straight multi-hit performances, with four of his seven hits during that stretch going for extra bases including homers Friday and Saturday. Those were Olson's multi-hit efforts in May however, as he began the month slashing .173/.254/.365 with a 35.6 percent strikeout rate in 14 games. Despite that cold spell, he has respectable power numbers on the year with nine homers and 25 RBI in 47 contests, and he's more than capable to stretching his current heater straight through into June.

Wade went 1-for-3 with a triple and a run scored in Sunday's 3-2 win over the Athletics.

Wade entered as a pinch hitter and lined a leadoff triple to right field in the eighth inning before scoring the game-tying run. The first baseman has shown signs of turning things around after a slow start to the season, going 4-for-11 with two runs scored, an RBI, a triple, a double and a 2:2 BB:K across 13 plate appearances in his last five games. Wade is now slashing .165/.266/.281 with 14 RBI, 11 runs scored, 10 extra-base hits -- including one home run -- and a 17:31 BB:K across 140 plate appearances so far this season.

Busch went 2-for-4 with a stolen base and one RBI in Sunday's 6-2 win over the White Sox.

Busch has gone 8-for-29 (.276) over his last eight games, though he also has a 3:8 BB:K in that span. The first baseman contributed an RBI in the Cubs' sixth-inning rally that helped secure the win, and he also logged his first steal since April 20 versus the Diamondbacks. The first baseman has a career-high three steals already, so don't expect too much more in the speed department. Busch has added a .255/.355/.463 slash line, seven home runs, 25 RBI, 21 runs scored, eight doubles and a triple over 44 contests.

Steer is not in the Reds' lineup for Sunday's matchup versus the Guardians.

It's a rare day off for Steer, who started each of Cincinnati's previous 23 contests. He slashed .258/.320/.416 with three homers and three steals during that stretch and is currently riding a six-game hitting streak. With Steer out of the lineup Sunday, Connor Joe is getting a start at first base.