Analysis: Third-string QBs rise up to the challenge


              Baltimore Ravens quarterback Anthony Brown throws a pass during the second half of an NFL football game against the Pittsburgh Steelers in Pittsburgh, Sunday, Dec. 11, 2022. (AP Photo/Don Wright)
            
              Tampa Bay Buccaneers quarterback Tom Brady (12) congratulates San Francisco 49ers quarterback Brock Purdy (13) after an NFL football game in Santa Clara, Calif., Sunday, Dec. 11, 2022. (Carlos Avila Gonzalez/San Francisco Chronicle via AP)
            
              San Francisco 49ers quarterback Brock Purdy (13) throws a touchdown pass to running back Christian McCaffrey during the first half of an NFL football game against the Tampa Bay Buccaneers in Santa Clara, Calif., Sunday, Dec. 11, 2022. (AP Photo/Tony Avelar)
Analysis: Third-string QBs rise up to the challenge