"Steven is doing OK," said Lovullo. "I know that his day of eligibility is coming up here. He is experiencing some symptoms here, and with the protocol through Major League Baseball, we can't rush that process. He's working daily to improve."
What are the symptoms?
"I think the original problem he had -- he failed a balance test. I think it's probably right in that area still," Lovullo said.
Matt Barnes filled in for Wright on Monday and could get another crack this weekend against the Royals.
"At this point, I think we haven't quite determined that," Lovullo said. "We feel like Matt threw the ball well enough, and if Steven's not ready, I think that's a direction we would consider."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, follow him on Twitter @IanMBrowne and listen to his podcast. This story was not subject to the approval of Major League Baseball or its clubs.