KANSAS CITY, Mo. -- Red Sox center fielder Jacoby Ellsbury was out of Boston's lineup Saturday, a day after being hit in the back by a pitch.
Red Sox manager Terry Francona said Ellsbury was sore and may not be able to play Sunday at Kansas City.
"He's got a good, old-fashioned, big contusion," Francona said before the Red Sox lost to the Royals 9-4.
Ellsbury was hit by Royals reliever Everett Teaford in the eighth inning Friday night. He said he underwent tests Friday.
"We just did some standard tests and everything came out the way we thought it would," Ellsbury said. "That's really it. There's nothing really more to talk about that."
Ellsbury, who said he would go through his normal pregame routine Saturday, was optimistic about a return to Sunday's lineup. Francona, however, remained cautious.
"He's actually been getting treatment all day," Francona said. "He's going to try to get out there and swing a little bit. We'll just kind of go on how he feels the next couple days."
Ellsbury is hitting .313 with 22 home runs, 79 RBIs and 33 stolen bases. He was replaced in center field by Darnell McDonald.
Shortstop Marco Scutaro, who had not played since Aug. 13 because of a stiff back, returned to the Boston lineup. He went 0-for-2 with two walks.
Meanwhile, David Ortiz took swings in the batting cage after being sidelined the past week with bursitis in his right heel. Francona didn't offer a timetable for a return but was hopeful Ortiz no longer needs the walking boot he'd been wearing.
"He does feel good," Francona said. "He's going to hit a little bit and start the progression, so that's really good news."
Information from ESPNBoston.com contributor Austin Meek and The Associated Press was used in this report.