"Third baseman Adrian Beltre's mild calf strain, which he suffered on a treadmill a week before spring training, has not responded to treatment the way the Rangers had hoped and he will be shut down over the weekend. Assistant GM Thad Levine said the realistic expectancy for time Beltre will miss is "10-14 days," but the club has no concerns he won't be ready for Opening Day.

Beltre aggravated the injury early in camp and has not been doing running. On Thursday, the club performed an MRI exam, which revealed a Grade 1 (the most mild grade) strain and decided to further limit his activities. He may resume light baseball activities sometime early next week.

"Nobody wants to be hurt, especially in spring training," Beltre said. "On the positive side, if something is going to happen, it's better now than during the season."

Beltre has never had issues with muscle strains in the past. He has occasionally missed some time in spring training due to lower back stiffness. In 12 full seasons in the majors, he has averaged 140 games per season.

"I think we're handling this in a very responsible and conservative matter considering where we are in the spring and the nature of who the player is," Levine said Friday."