Massey is absent from the lineup for Wednesday's contest versus the Rockies.

Massey has been one of the worst-hitting regulars in baseball this season and has been particularly brutal over the last two weeks, going 5-for-39 with a 10:1 K:BB across his last 41 plate appearances. Cavan Biggio is handling second base for the Royals on Wednesday.

Campbell is absent from the lineup for Wednesday's game against the Mariners, Chris Cotillo of MassLive.com reports.

It appears to be a routine day off for Campbell, who has now started 23 of Boston's first 26 games this season. The Red Sox are going with Romy Gonzalez at second base and in the No. 7 spot in the batting order Wednesday.

Castro (oblique) remains out of the lineup for Wednesday's game against the White Sox.

Castro hasn't played in a week due to a right oblique injury, although indications are that he will not require a trip to the 10-day injured list. Luke Keaschall will start at second base and Brooks Lee will cover third base for the Twins.

Castro (oblique) took indoor batting practice prior to Tuesday's game against the White Sox, Bobby Nightengale of the Minneapolis Star-Tribune reports.

Castro admitted Tuesday that he doesn't feel 100 percent while he works through a right oblique injury, but he and Twins manager Rocco Baldelli are confident Castro can avoid a stint on the injured list. The oblique flares up when the switch hitter bats left-handed, so it's possible he returns only to hit right-handed initially.

Keith is absent from the lineup for Wednesday's game versus the Padres.

It's the first time this season that Keith has been out of the lineup two days in a row, although this one isn't a surprise since the Padres are sending lefty Kyle Hart to the bump. Spencer Torkelson will handle first base and bat fifth for the Tigers.

Semien was dropped from leadoff to fifth in the order for Tuesday's game against the Athletics, Kennedi Landry of MLB.com reports. He went 2-for-3 with a walk, a home run and four RBI in an 8-5 win.

Texas manager Bruce Bochy enacted lineup and order changes in hopes of shaking the team out of an offensive malaise. That appeared to work for Semien, who entered the night batting .141. Josh Smith took over at leadoff against a right-hander, though it's unclear if Bochy will continue this practice against lefties.

Muncy isn't in the lineup for Tuesday's game against the Rangers.

Muncy went 2-for-7 with a walk during the Athletics' previous series against Milwaukee, and he'll now take a seat for the first of three games versus Texas. His absence will allow Luis Urias to pick up a start at second base and bat ninth.

Keith is not in the lineup for Tuesday's game against the Padres.

With Kerry Carpenter limited to designated hitter duty for now as he comes back from a hamstring issue and Spencer Torkelson deserving everyday playing time, Keith faces a playing-time squeeze in the short term. Torkelson is at first base versus righty Nick Pivetta on Tuesday.

Arias is not in the lineup for Tuesday's game versus the Yankees.

Arias isn't dealing with any known injury, but this will be the second time in the last four contests that he's been on the bench. Daniel Schneemann will start at second base and bat eighth for the Guardians.

Castro (oblique) remains out of the lineup for Tuesday's game against the White Sox.

Castro hasn't played since tweaking his right oblique on April 16, although there's been no indication to this point that the Twins are mulling a injured-list stint. The Twins are going with Brooks Lee at third base and Edouard Julien at second base Tuesday.