Colton McKibbitz and Jake Brindle

Matt Maiocco and Jennifer Lee Chan examine the most glaring areas of concern on the 49ers roster, starting with the depth on both the offensive and defensive lines. They also discuss how quarterback Brock Purdy is not just a flash in the pan and why his success last season is repeatable going forward. Plus. young defensive lineman Drake Jackson joins the show to talk about his expanding role in Year 2 and shares why it's a "blessing" to have teammates Nick Bosa and Arik Armstead to look up to.

(6:25) Offensive line concerns due to the departure of Mike McGlinchey

(10:00) Colton McKivitz is primed for a good season as starter

(18:00) Why Brock Purdy's performance last season was not a flash in the pan

(28:20) Drake Jackson on difficult leap from college to pros

(33:20) Jackson shares lessons learned after being benched last season

(48:10) Why Edge rusher opposite Nick Bosa could be an area of concern