San Francisco 49ers quarterback Nick Mullens (4) passes against the Oakland Raiders during the first half of an NFL football game in Santa Clara, Calif., Thursday, Nov. 1, 2018. (AP Photo/Ben Margot)
San Francisco 49ers quarterback Nick Mullens (4) passes against the Oakland Raiders during the first half of an NFL football game in Santa Clara, Calif., Thursday, Nov. 1, 2018. (AP Photo/Ben Margot)
Photo: Ben Margot / Associated PressNick Mullens, in his first NFL game, was the story of the final Battle of the Bay.
The 49ers’ third-string quarterback entered a prime-stage Thursday in anonymity and he exited with a stat line befitting his Hall-of-Fame buddy, Brett Favre.