New York Yankees left-hander CC Sabathia, on the disabled list with a right knee injury, will be out until at least July.
Sabathia received a stem cell treatment injection in the inflamed knee from Dr. James Andrews last week.
Yankees general manager Brian Cashman told the New York Post that the team was informed that if the process works, Sabathia would need at least six weeks of recovery time.
"Our dialogue with Andrews has been good and the small sample of stem cell procedures, the results are very successful," Cashman said. "But he has to be pain free before strengthening, so there is a ways to go. Because he is a starter it will take longer. I have no idea how long it will be and if it will be successful. We are hoping it is six weeks to a major league return."
Sabathia was scheduled to stop using crutches Monday and begin pool therapy on Tuesday. The Yankees hope Sabathia can steadily build strength in the knee and then go through an abridged spring training before getting back on the mound.
The Yankees are also without starter Ivan Nova for the season after having Tommy John surgery. Michael Pineda, who has an injured lat, is throwing bullpen sessions. Cashman said Pineda's target return date is in the second week of June.
The Yankees' current rotation includes Masahiro Tanaka, Hiroki Kuroda, David Phelps, Vidal Nuno and Chase Whitley. Cashman said Adam Warren is the next pitcher the team would turn to if it has a rotation spot opening due to injury or performance.
NO SHOULDER DAMAGE FOR GIO
Gio Gonzalez is breathing a sigh of relief after learning there is no structural damage to his pitching shoulder.
The Washington Nationals left-hander was placed on the 15-day disabled list Sunday with inflammation in his left shoulder. It is the first time the 28-year-old is headed to the DL in his seven-year career.
Gonzalez allowed five runs in a season-low three innings Saturday in a loss against the New York Mets.
It was Gonzalez's second straight bad outing. Prior to that, he gave up seven runs and nine hits in 4 1/3 innings a week ago against the Oakland A's. He said he first felt discomfort April 23, and was dejected when general manager Mike Rizzo informed him he'd be shelved.
"It's one of those things you've just got to grind through," Gonzalez said. "I'm just trying to find out what it is, and hopefully something positive comes out of it."
Gonzalez's ERA climbed to 4.62 on the season after Saturday's loss. He is 3-4 in nine starts this season.
The Nationals recalled right-handed reliever Ryan Mattheus to take Gonzalez's spot on the 25-man roster.
SOX WON'T SHIFT BOGAERTS
Considering third baseman Will Middlebrooks will have a splint on his fractured right index finger for at least a week and will be sidelined indefinitely, the Boston Red Sox almost certainly will be on the lookout for help to bolster the left side of the infield.
However, they don't plan to move shortstop Xander Bogaerts to third base, general manager Ben Cherington told the Boston Herald.
"We don't have any reason to believe he can't play short," Cherington said. "You've got to keep going in the right direction, but he looks, to me anyway, a little more comfortable out there making the routine plays. And that's all he needs to do."
That seemingly would mean the Red Sox aren't inclined to sign free agent shortstop Stephen Drew and move Bogaerts to third base.
Bogaerts has struggled at times defensively, but Cherington said the Red Sox likely will need to see him play the position for a full season at the major league level before making any determination on his future.
Cherington also noted that Bogaerts' offensive numbers are above average for shortstops, even though he has not yet hit for the kind of power that the Red Sox expect. He hit his second homer of the season Saturday night, a line drive into the seats atop the Green Monster.
"Keep in mind, guys that play short in the big leagues, there's still a range of defensive ability, and the acceptance of that range is going to be relative to other contributions," Cherington told the Herald. "Even though Xander hasn't really caught fire yet, he's still one of the better offensive performers in the league at that position. So if you're doing that, you don't have to be (11-time Gold Glove winner) Omar Vizquel in order to be helping."
SCUTARO'S FUTURE UNKNOWN
Pondering the possibility of going a full season without second baseman Marco Scutaro, San Francisco Giants manager Bruce Bochy was willing to offer a compromise of sorts.
Bochy admitted the Giants are close to a point where they must weigh the advantages of having a part-time Scutaro rather than waiting for his ailing lower back to completely heal, which may or may not ever happen.
"At some point, we've got to be honest: (What) are we going to get?" Bochy said Sunday before the Giants' 4-1 win over the Miami Marlins. "If it's a couple of days as a pinch hitter, that could work. We would be a better club by doing that. But right now we're not close to getting him to that point."
Scutaro, 38, recently spent time in Arizona, waiting for his back to heal while he attempts to stay in a semblance of baseball shape.
However, with the pain slow to subside, the veteran made the decision last week to go to Florida for what the Giants called a "blood-spinning" procedure. He will remain in Florida indefinitely while judging whether the procedure was a success.
BRIEFLY: The Chicago White Sox are feeling better after an MRI found no structural damage in first baseman Jose Abreu's inflamed left ankle ... The Miami Marlins released pitcher Carlos Marmol after designating the veteran right-hander for assignment last week ... The Marlins also officially signed veteran infielder Miguel Tejada to a minor league deal after he passed a physical. Tejada, suspended by MLB for 105 games last season, will be able to return after May 31 ... The St. Louis Cardinals will activate Jason Motte from the disabled list Tuesday, almost a year since the relief pitcher had Tommy John surgery.