Mason shines as QBs battle for backup job in 49ers’ preseason loss to Titans

Matt Maiocco and Jennifer Lee Chan break down the 49ers’ preseason loss to the Titans, Jordan Mason’s impressive performance and the battle for the backup quarterback spot between Brandon Allen and Josh Dobbs. Then, Matt and Jennifer turn their attention to the Trent Williams holdout and what's next for Brandon Aiyuk.(1:26) 49ers drop preseason opener to Titans(7:19) Allen, Dobbs fighting for backup job(12:50) 49ers show early struggles with new kickoff rules(17:30) Could Puni start Week 1?(25:08) Latest on Aiyuk’s negotiations