Gasper went 1-for-3 with a solo home run during the Red Sox's 3-2 loss to the Royals on Friday.
Gray (17-5) was tagged with the loss in Friday's game against the Royals, allowing three runs on six hits and two walks while striking out five across six innings.
Valdez was removed from Friday's contest against the Cubs with left hamstring discomfort, Aiden Stepansky of MLB.com reports.
The Red Sox recalled Seigler from Triple-A Worcester on Friday.
Boston placed White on the 10-day injured list with a right foot ligament injury Friday, retroactive to Sept. 9.
Rutschman (elbow) will start at catcher and bat third in Friday's game against the Royals.
Lowe is not in the lineup for Friday's game against the Cubs.
The Pirates optioned Simon to Triple-A Indianapolis on Friday.
The Pirates activated O'Hearn (quadriceps) from the 10-day injured list Friday.
Dotel is slated to start Friday's game against the Cubs at Wrigley Field, Dominic Campbell of SI.com reports.
DraftKings. This is a low line for Patrick Sandoval, who has registered 29 strikeouts in 30 innings for the Red Sox, since making his return from Tommy John surgery. He’s cleared this line in 4/6 games, with his lone misses in two outings against the tough to strikeout Blue Jays. He’ll now face the Pirates, who have been strikeout prone against lefties all season, including 25.6% in the second half. Any rain for this one should arrive well after Sandoval is finished for the day.
