What happened: Los Angeles hosts San Francisco tonight in a scheduled preseason matchup. Steve Smith Sr. and James Palmer are evaluating the Chargers' receiver room.
Why it matters: The game offers a direct test of Harbaugh's assessment. McDaniel's influence on the passing attack is the main point to track.
By the numbers: San Francisco 49ers 0, Los Angeles Chargers 0 before kickoff.
What to watch: Watch how Los Angeles deploys its receivers once play begins.