The San Francisco 49ers are assessing their quarterback situation ahead of a Week 4 matchup against the Jacksonville Jaguars with both Brock Purdy and Mac Jones ailing.

Purdy returned to practice Wednesday after missing the past two games with a toe injury. Jones started the past two games for San Francisco but is now dealing with a knee injury that he aggravated during Sunday's victory over the Arizona Cardinals.

In another injury concern, wide receiver Ricky Pearsall is dealing with his own knee discomfort and missed practice Wednesday.

Both quarterbacks are expected to be limited in practice to start the week. The 49ers' third-string quarterback is Adrian Martinez, who has never taken an NFL snap.

Purdy was 26 of 35 for 277 yards and two touchdowns with two interceptions in the team

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