ARLINGTON -- Nelson Cruz is facing another hamstring problem that could put him on the disabled list.

He has been on the disabled list twice this season because of hamstring issues and another one came up on Saturday night in the Rangers' 3-1 loss to the Red Sox. Cruz had to leave the game after seven innings because of tightness in his left hamstring.

"It's just tight," Cruz said before exiting the clubhouse. "It was just a precautionary deal. I didn't want to risk it."

The Rangers are going to call up outfielder Brandon Boggs from Triple-A Oklahoam City on Sunday. He will likely replace pitcher Pedro Strop, who was recalled Saturday when infielder Cristian Guzman went on the DL.

The team is going to wait a day or two to see if Cruz needs to go on DL, but Boggs at least gives them insurance in the outfield.

The Rangers' offense is already without second baseman Ian Kinsler with a strained left groin muscle. He has been sidelined since July 28 and it's becoming more doubtful he'll be back before September at the earliest. The Rangers are hoping they won't lose Cruz for another extended period.

"I really don't know the extent of it," manager Ron Washington said. "We certainly hope it's not bad."

The injury occurred while Cruz was legging out a triple with one out in the seventh. Cruz, who hit one into the right-field corner that caromed away from Red Sox outfielder J.D. Drew, appeared to slow up going around second base and was on half-speed by the time he got to third.

He stayed in the game but did not get off third base. David Murphy and Jorge Cantu both grounded out to end the threat. When the Rangers went on for defense in the top of the eighth, Julio Borbon was in for Cruz.

Cruz went on the disabled list on April 27 with a strained right hamstring and missed 16 games. He made it back for just two weeks before going on the disabled list again on May 30, this time for a torn left hamstring. During that absence, he missed 22 games.