BOSTON - Maybe the Red Sox lineup will just never be at full health in 2017.

Pablo Sandoval's right knee sprain has landed him on the 10-day disabled list, with Josh Rutledge returning from the DL in Sandoval's place.

Sandoval was hurt reaching for a ground ball Sunday.

"Medial side of the right knee is what’s been sprianed," Farrell told SiriusXM's MLB Network Radio on Tuesday. "I don't know how long this one’s going to take.

"It looked like kind of a benign play at the time, and in between innings it really started to get sore on him. ... Added force as he was kind of rolling over the front side of that. He’s got some swelling in there, it really kind of swelled up on him pretty good."

Rutledge has been on the DL all season because of a left hamstring strain. He played five rehab games between Triple-A Pawtucket and Double-A Portland, playing one game for the latter on Monday night.

Marco Hernandez's role for the Red Sox grows in importance from here with Brock Holt on the DL because of vertigo. Steve Selsky will be leaned on more, too.

The Sox are aiming for a platoon at third base with Rutledge and Hernandez in Sandoval's absence.

"We feel like with a platoon system at third we’re going to be covered," Farrell said.

Sandoval is on the DL retroactive to April 24. He wasn't doing enough at the plate (.213) before the injury.