Pirates general manager Ben Cherington said prior to Sunday's game against Atlanta that Cruz is considered day-to-day due to lower back tightness,
Noah Hiles of the Pittsburgh Post-Gazette reports. "We don't have a full update yet, because he was going to go through some stuff and see how he felt," Cherington said of Cruz. "He felt a little tightness in that low back as he pulled up on the bases, as people saw [in Saturday's 3-2 loss]."