Quarterback Baker Mayfield is expected to miss "at least a couple of weeks" after suffering a high ankle sprain in the Carolina Panthers' 37-15 loss to the San Francisco 49ers on Sunday, a source told ESPN's Adam Schefter.

Mayfield is getting further tests and additional opinions to determine his exact recovery timeline, Schefter reports.

P.J. Walker is expected to start Carolina's Week 6 matchup against the Los Angeles Rams.

Mayfield appeared to sustain the injury late in the first half after a 49ers player landed on his leg.