Casas was scratched from the lineup Friday at Toronto for undisclosed reasons.

Justin Turner will start at first base as Masataka Yoshida shifts to the DH role and Ceddanne Rafaela is added to the mix in center field. There is no word yet as to what prompted the Red Sox to scratch Casas from Friday's series opener against the Blue Jays, but he played all 18 innings of Thursday's doubleheader against the Yankees.

Mountcastle (shoulder) is out of the lineup again Friday against the Rays.

Imaging scans taken Thursday on Mountcastle's left shoulder revealed no structural damage, but he'll grab a second straight day of rest and treatment as Ryan O'Hearn handles first base. Heston Kjerstad is serving as the Orioles' designated hitter.

Encarnacion-Strand is out of the lineup for Friday's game against the Mets.

Encarnacion-Strand will be on the bench for the fourth time in five games, with two absences coming against right-handed pitchers and two coming versus left-handed pitchers. With the power-hitting rookie no longer assured of even a short-side platoon role, he's tough to justify rostering in shallower redraft formats. Encarnacion-Strand's downturn in playing time comes even as he's gotten off to a solid start to September with a .297/.333/.432 slash line through 11 games.

Votto is out of the lineup Friday against the Mets.

With lefty David Peterson on the mound for New York, the lefty-hitting Votto will take a seat to begin Friday's contest. Spencer Steer will start at first base.

O'Hearn went 1-for-4 with a solo home run in Thursday's 4-3 loss to the Rays.

O'Hearn's blast was one of only four hits for the Orioles in the game, and he struck out in his other three at-bats. With Ryan Mountcastle nursing a shoulder injury, O'Hearn may get more playing time at first base in the coming days, although top prospect Heston Kjerstad has also joined the big-league roster and figures to be in the 1B/DH mix. O'Hearn has maintained a solid September so far, going 11-for-35 (.314) with two homers and nine RBI across 10 games. He's slashing .299/.330/.505 with 13 long balls, 54 RBI, 42 runs scored and four stolen bases through 309 plate appearances this season.

Guerrero went 1-for-4 with a two-run home run in Thursday's loss to the Rangers.

The first baseman gave Toronto an early lead when he took Nathan Eovaldi deep in the first inning, but Texas surged ahead in the top of the second and never looked back. Guerrero is scuffling again in September, slashing .224/.333/.388 through 13 games with two of his 22 homers, but with 86 RBI on the season and 15 games left on the Blue Jays' schedule, he still has an outside shot at his second career 100-RBI campaign.

Steer went 1-for-4 with a solo home run in Thursday's 8-2 loss to the Tigers.

Steer launched his team-leading 21st home run of the season in the sixth inning. In addition to his homers, he leads the Reds with 79 RBI. While manager David Bell may shuttle players in and out of the starting lineup, he appears to be making an effort to get Steer in the lineup daily.

Vaughn went 1-for-4 with a two-run home run Thursday in a loss to the Twins.

Vaughn kept the White Sox from getting shut out with his two-run blast to left field in the seventh inning. The long ball was his 20th of the campaign, marking the first time he has reached that number in three seasons as a major-leaguer. Vaughn has added a career-high 63 runs and needs just one more RBI to tie the career-best mark of 76 he established last year.

Medical imaging on Mountcastle's left shoulder revealed no damage Thursday, Steve Melewski of MASNSports.com reports.

Manager Brandon Hyde added that Mountcastle won't require a trip to the injured list and may even be available off the bench Thursday against the Rays. The 26-year-old first baseman is slashing just .194/.324/.194 across 37 plate appearances since the beginning of September.

Mountcastle (shoulder) is out of the lineup Thursday against the Rays.

Mountcastle exited Wednesday's 1-0 loss to the Cardinals after feeling his left shoulder pop during a swing in the first inning. He's slated to get an MRI later Thursday, at which time more details about the severity of his injury should be available. The Orioles called up outfielder Heston Kjerstad from Triple-A Norfolk to give the team an extra healthy bat in the short term.