49ers Talk September 14, 2021 6:35 pm Expectations for Mitchell, Sermon after Mostert injury 49ers Talk hosts Matt Maiocco and Laura Britt discuss the potential of rookies Elijah Mitchell and Trey Sermon after losing starting running back Raheem Mostert for the rest of the season. 49ers videos 1:02 Smith reacts to being called toughest opponent Staley, Williams faced 2:01 Aldon Smith reflects on NFL career, lessons learned 2:51 Former 49er Aldon Smith shares message to youth on mental health 0:58 49ers Talk: 49ers sign Terrell Owen's son Terique as undrafted free agent 1:25 49ers Talk: Is ‘writing on the wall' for Samuel's future in San Francisco?