His back is still bothering him.
Thome left Saturday's game against the Chicago Cubs because of lower back tightness. Thome has a history of back problems, so it always had been a possibility he might injure it while playing first base.
"It's about the same," Thome said before Sunday's game. "It's no worse, but it's about the same as yesterday."
Thome is receiving back treatment, but said he has no feeling if he might be placed on the 15-day disabled list. Thome said he did not know if he would be available to pinch-hit on Sunday.
"I've dealt with it before," Thome said. "Typically, it doesn't get any worse. I think the main thing is get aggressive with the treatment and hope it clears out of there as quickly as it can."