Trey Lance flashes potential as 49ers lose preseason opener vs. Chiefs

Matt Maiocco and Jennifer Lee Chan break down the 49ers' first preseason game against the Chiefs, including how Trey Lance performed in his first appearance as a 49ers quarterback, what the rushing attack looked like and if San Francisco’s youthful secondary held up against the Chiefs offense.(1:14) 49ers fall to Chiefs in first preseason game (7:13) How important are the joint practices with the Chargers? (13:20) Breaking down the 49ers' youthful secondary (18:50) Does the secondary have enough depth? (23:02) 49ers sign Mychal Kendricks (28:40) Are the 49ers set at wide receiver?