SAN DIEGO -- Albert Pujols is unsure where reports about an argument between himself and Cardinals manager Tony La Russa came from, but he is sure that he would like to put a stop to the controversy.

Pujols dismissed any notion of angry words being exchanged with his manager during Friday's game in Anaheim, which had been reported elsewhere.

"Ask the guy that wrote about it, because I don't know where he got his story," Pujols said. "I never crossed any words with Tony, so I don't know what that guy in the paper is writing about."

The first baseman went on further to curtail any follow-up about the situation.

"We need to flip that page, because I don't want to talk about it," Pujols said.

Cards tab Walters for Thursday start

SAN DIEGO -- With two starting pitchers battling injuries, the Cardinals have made a decision on how they will fill one of the vacant rotation spots.

P.J. Walters, who was recalled from Triple-A Memphis on Saturday when Brad Penny was placed on the disabled list, will start on Thursday and take Penny's spot in the rotation in the series finale at San Diego.

Walters filled in for a spot start last season as well, allowing three runs over four innings at Chicago and appeared in eight games total for the Cardinals while posting a 9.56 ERA.

With Kyle Lohse also unavailable, manager Tony La Russa emphasized that the club will continue to seek reinforcements from the Minors rather than from outside the organization.

"We will likely look within for help," LaRussa said.

Lohse to undero further testing on forearm

SAN DIEGO -- Kyle Lohse continues to look for answers to the source of his forearm inflammation, and after an MRI on Monday revealed no structural damage, Lohse will undergo further testing by specialists on Wednesday to determine the next steps in the right-hander's recovery.

The inflammation is a recurrence of an issue Lohse experienced last season as well, and no timetable has been set for his return, according to a club statement.

Lohse called the situation "frustrating" and vowed to do "whatever they need me to do" to proceed with the evaluation. The assumption is that Lohse will miss his next scheduled start on Saturday at Wrigley Field.

Meanwhile, the Cardinals already have summoned P.J. Walters to fill in for Brad Penny on Thursday in San Diego, but manager Tony La Russa remained optimistic that Penny will be ready when the 15 days of his disabled-list stint are over.

"We're hopeful of getting Penny back after or soon after his DL period is over," La Russa said.