Pena (oblique) isn't in the lineup for Tuesday's game against the Athletics.

Pena was a late scratch from the lineup Sunday due to oblique soreness, and he'll need to miss at least one more start Tuesday while he recovers. Mauricio Dubon will take over at shortstop for the Astros and bat ninth.

Manager Bruce Bochy said Tuesday that Seager (abdomen) will miss the rest of the season, Jeff Wilson of AllDLLS.com reports.

Seager recently resumed light baseball activities after undergoing an appendectomy in late August, but the team won't bother rushing him back now that they sit five games back of a wild-card spot with only six left to play. Despite missing time this year with hamstring injuries in addition to his recent procedure, the 31-year-old slashed .271/.373/.487 while collecting 21 home runs, 50 RBI, 61 runs and three stolen bases across 102 games.

Baez was scratched from the lineup ahead of Tuesday's game versus Cleveland due to neck stiffness.

Baez will take a day off to rehab his neck injury, opening up an opportunity for Trey Sweeney to start at shortstop and bat ninth for the Tigers.

Smith was scratched from the lineup ahead of Tuesday's game versus the Twins due to an elbow infection, Kennedi Landry of MLB.com reports.

Smith had originally been slated to start at shortstop and bat third Tuesday, but his elbow will instead cause him to miss the series opener. Ezequiel Duran will fill in as Texas' shortstop and bat ninth.

The Orioles optioned Vazquez to the minors Monday.

He'll give up his spot on the 28-man active roster to catcher Adley Rutschman (oblique), who was reinstated from the 10-day injured list. Vazquez had played sparingly since being recalled from Triple-A Norfolk on Aug. 1, appearing in 24 games while batting .189 with one home run and two steals.

Crawford went 1-for-4 with a grand slam in Sunday's 7-3 win over the Astros.

Crawford is up to 12 homers on the year, including three over his last eight games. In that span, he's gone 10-for-29 (.345) while adding eight RBI. The shortstop has a .266/.353/.374 slash line with 58 RBI, 67 runs scored, 24 doubles and eight stolen bases through 152 contests overall.

Pena was scratched from Sunday's lineup against the Mariners due to left oblique soreness, Shannon Drayer of SeattleSports.com reports.

Pena was originally set to bat leadoff and play shortstop in Sunday's series finale, but he'll now head to the bench. Mauricio Dubon will replace him against Seattle, and more information on Pena's status will likely come in the near future.

Smith is out of the lineup for Sunday's game against the Marlins.

The left-handed-hitting Smith has been a mainstay in the lineup versus right-handed pitching all season, but he'll hit the bench Sunday while the Marlins send righty Eury Perez to the hill. Smith's exit from the lineup comes after he went just 2-for-21 with one walk against six strikeouts over the past six games.

Baez will start at shortstop and bat ninth in Sunday's game against Atlanta.

Baez will be making his third consecutive start after going 1-for-6 at the dish over the first two contests of the series. With Colt Keith (rib) recently landing on the injured list, Zach McKinstry will likely platoon at third base with Andy Ibanez for the remainder of the regular season, leaving Baez to handle shortstop.

Volpe is not in the starting lineup against the Orioles on Sunday.

Volpe has been dealing with a shoulder issue for much of the season and has missed a few games in September as a result, but he entered Sunday having started four of New York's past five games at shortstop. With that said, there's no indication that Sunday's day off is anything more than a maintenance day. Jose Caballero is starting at shortstop for the series finale.