Cruz hit .250 (3-12) in the Rangers' recent three-game series in Anaheim against the Angels, and he went 1-for-4 with a strikeout in the rubber game on Thursday.
"He's struggling. I'm seeing him try and press a little bit because he wants to do well," Rangers manager Ron Washington said. "I just felt like giving him a day and give him a chance to get some extra work with Clint [Hurdle]. He'll come back tomorrow and start relaxing. We need him."
Washington attributed the slump to Cruz's approach at the plate and the lack of quality swings.
"It's what everybody is else is seeing, not taking good swings," Washington said. "It seems like his timing is off. When you're trying to do too much, your bat head slows down. And that's what we've been seeing lately."