Sandoval back on DL, 2 others out

The realization that the Red Sox’s injury woes had put him in an untenable situation came even before manager John Farrell had to shift catcher Christian Vazquez to third base, a position Vazquez hadn’t played since he was an 18-year-old in Class A.

In the infield alone, first baseman Mitch Moreland has an ailing toe, second baseman Dustin Pedroia has bruised ribs and third baseman Pablo Sandoval has been dealing with an inner-ear infection. So the Red Sox made a series of roster moves before Tuesday night’s game in Kansas City to gain a little more flexibility — and avoid any additional emergency substitutions.

The struggling Sandoval, who missed time earlier this year with a knee injury, went on the disabled list to deal with his infection. Right-hander Austin Maddox was also optioned to Triple-A Pawtucket, and the two roster spots were filled by infielder Deven Marrero and first baseman Sam Travis.

Pedroia was hit by a 92 mph fastball Sunday night in Houston, the impact of which caused him to spit up blood. X-rays and an MRI on his ribs came back negative, but Pedroia still felt restriction caused by the swelling and soreness when he tried to take some swings in the cage Tuesday night.

Moreland was hit on the back foot by a sinking pitch Monday night.

Farrell wouldn’t rule out a rehab assignment for Sandoval when he’s ready to return.

“That’s something we’ll probably sit down and map out for him,” Farrell said. “The importance of playing every day would be a benefit to him.

“We recognize it’s a tough situation, but you try to make the most of your roster and what you have currently to win today.”