Baker Mayfield was out of his walking boot Friday and "definitely could be the backup" to PJ Walker on Sunday when the Carolina Panthers play the Los Angeles Rams, interim coach Steve Wilks said.

"Baker had a great workout this morning," Wilks said. "He looked good. ... The strength staff took him through a very intense workout -- good movement, change of direction and really trying to put some pressure on his ankle.

"He threw the ball well."

Mayfield suffered a left ankle sprain near the end of the first half of the 37-15 loss to the San Francisco 49ers on Sunday in what turned out to be the final game at Carolina for coach Matt Rhule, who was fired Monday after a 1-4 start to this season and 11-27 record since 2020.

Despite reports that Mayfield would miss two to six weeks, Wilks said Wednesday the first pick of the 2018 draft was day-to-day and didn't rule him out of being available Sunday.