BOSTON -- Red Sox third baseman Marco Hernandez may require season-ending surgery to treat a left shoulder injury, manager John Farrell said Friday.
Hernandez is currently on the 10-day disabled list, along with fellow third basemen Pablo Sandoval (right knee sprain) and Brock Holt (vertigo). He originally hurt his shoulder in the first inning of Boston's game against the Orioles on May 3.
"Marco is still feeling some symptoms here, and it's likely this may have to require some additional work to rectify, and that would mean some procedure," Farrell said.
Farrell said if Hernandez does require surgery it will be season-ending, but that the third baseman will likely undergo a second MRI before the team makes any decision.
As for specifics of Hernandez's injury, Farrell would say only that the issue does not involve the rotator cuff.
Hernandez is batting .276 with a .628 OPS in 60 plate appearances this season.
Farrell offered better news about the Red Sox's two other injured third basemen.

Holt, currently on a rehab assignment at Triple-A Pawtucket, was scheduled to play the first half of Friday's game to get work in before rain hits the area this weekend. Farrell said Holt is making "steady progress," but will stay at Pawtucket at least through the weekend.
Sandoval, Farrell said, took grounders Friday for the first time since his injury. He is expected to begin a rehab assignment soon.
Josh Rutledge started at third base Friday against the Rays, and will continue that role until one of the other three -- likely Holt -- returns.
Price to pitch at Pawtucket regardless of weather
Rain in Pawtucket will not deter pitcher David Price's rehab.
The lefty, who has been out since March with a left elbow strain, is scheduled to pitch Sunday at Triple-A, and Farrell said he will throw even if the game is canceled.
"In any event with weather, he'll get his work done there," Farrell said. "Whether it's in the game, whether it's inside in a simulated-type situation, the workday will be had. The setting might be a little different, but at least he'll get up to 75 pitches in some setting."