Beltre has mild inflammation in the hamstring area and is listed as day to day. He was out of the lineup for Monday's series opener.
Beltre said before Monday's game that he could return soon and that a stint on the disabled list isn't necessary. Beltre missed five weeks in the second half of last season with a strained left hamstring.
"I feel good," Beltre said. "I was trying to fight my way into the lineup tonight, but I didn't fight hard enough. Maybe tomorrow."