DETROIT -- The injury news continues to get worse for Boston Red Sox pitchers.
"He felt a little discomfort in that left shoulder [area]," Boston manager John Farrell said. "It will be re-examined here tomorrow, but there's potential for the DL."
Morales, who had a left shoulder injury in 2012, was just reinstated May 28 after missing 52 games with a lower back strain. He had been placed on the DL retroactive to March 22.
His return from the DL was delayed when a left pectoral strain was discovered while he was still out with the back strain.
"It's hard to be real specific right now," Farrell said when asked where the injury was this time.
Morales tended to think it was in his left pectoral muscle.
"I feel a little soreness," Morales said after the game as he pointed to the injured area. "He wants to check it out tomorrow."
When asked whether it was similar to a previous injury, Morales continued to say it was more in the pectoral area.
"It's crazy," Morales said. "I'll stay positive."
The injury occurred when Morales delivered a fastball to the Tigers' Omar Infante, who clubbed it out for a two-run homer in the bottom of the seventh.
"When I threw one pitch to Infante, the fastball, I feel the pinch right there," Morales said.
After a visit to the mound by Farrell and the team trainer, Morales was taken out of the game.
He lasted 2 1/3 innings, allowing four runs on five hits and two walks. He struck out four.
He had a 5.40 ERA entering the game and left with it at 7.30.
It was his first bad outing since June 8 against the Los Angeles Angels, when he lasted just 2/3 of an inning, allowing four runs on two hits. He also walked four in that span.
Earlier in the day, Clay Buchholz's planned bullpen session was scrapped, leaving him unlikely to come off the disabled list to start Tuesday.
The ineffectiveness of rookie starter Allen Webster didn't help matters.
He gave up four runs in the first inning for a second straight spot start for the Red Sox, with the big blow coming from a grand slam by Victor Martinez.
"We only have three starts to go by, but he's going to be a very good pitcher," Farrell said. "It's still strike throwing early in the count where additional consistency needs to be. Once he got them to acknowledge that secondary pitch, he could go to it, slowed them down a little bit, and he was able to throw some fastballs by some guys. I think there were some flashes inside this outing that we saw all of spring training and that's like we've said very good stuff."
Webster finished allowing eight hits and five runs, and struck out five in 4 1/3 innings.
"He's got all the pitches and raw stuff you're going to look for in a young pitcher; it's a matter of consistency, matter of repetition especially at this level from at-bat to at-bat," Farrell said. "Being able to execute pitches is the number one thing."
The Red Sox could have two new arms arrive in Detroit prior to Sunday's game with the Tigers if they send Webster back to Pawtucket and place Morales on the DL.
"We've got to get an arm in here because of the need to go to the bullpen so early," Farrell said. "It will be determined."
The last of the injury news came from Mike Carp, who started at first base. He labored getting around the bases most of the night.
"He's not full speed, but he's able to play first base, but can't get into the outfield obviously with the way that he's running," Farrell said.