The Arizona Cardinals played one of their worst games of the Kyler Murray era, with very little positivity to take away from a poorly-executed contest.

When the San Francisco 49ers (2-2) and Arizona Cardinals (1-3) play on Oct. 6 at Levi's Stadium, Brock Purdy and Kyler Murray will be under center for their respective offenses. Which QB has the advantage in this bout? Find out below.

Cardinals star Kyler Murray is eligible to come off the physically unable to perform list, but the two-time Pro Bowler appears to need more time to recover from a torn ACL.

Arizona Cardinals QB Kyler Murray knows the team's 1-3 start isn't acceptable. Losses to teams such as the Buffalo Bills and Detroit Lions were close, though their Week 4 humbling to the Washington Commanders in 42-14 fashion left a different taste in Murray's mouth.

Adam Schefter of ESPN reports that the Cardinals are not expected to active QB Kyler Murray off the physically unable to perform list when he becomes eligible Monday.